slotted, drilled, dimpled, or blank rotors?
- Home
- Board: /o/ - Auto
- Reading: slotted, drilled, dimpled, or blank rotors?
hey /o/, its baout time i replace my brakes, and while im in there replacing my brake pads ( Hawk HP+) and lines thinking about getting dimpled/slotted rotors but i dont know if they actually give any braking beneifits, anyone on /o/ have experience with "non-blank" rotors?
>>15094614
If you're not tracking your car there is absolutely no reason to buy anything other than vented (blank) rotors.
>>15094614
Both of my cars have drilled and slotted but only because I do a lot of commuting downhill and it keeps my brakes from warping
>>15094660
Learn to fucking downshift
And no it doesn't
chances are your pads and fluid will be overheating long before your discs, the advantages will probably be too small to notice and the reliability and added cost of drilled discs would outweigh the benefits.
>>15094684
>implying it doesnt
>>15094697
If you're just commuting it absolutely doesn't
You have to be moving at high speed to get the benefits of drilled/slotted rotors
Stop trying to bullshit your way out of being a shit driver
>>15094723
By commute I meant on the freeway. Fast enough to generate a shit ton of heat on the downhill.
And 4th gear is at 6k RPM doing 75. No thanks.
>>15094765
you confirmed for a shit
>>15094774
Sue me for going overkill on my rotors, I like having them.
>>15094774
Says the tripfag
>>15094784
sorry if you can't manage a normal highway commute without cooking your brakes you just don't know how to drive
drilled rotors don't fucking do anything with modern brake pads
it's just to look cool
I got EBC yellow stuff pads and slotted/dimpled rotors on my tuck. I live in the mountains and use my truck as a truck. I also down shift and engine brake on hills but it isn't always enough.
>>15094805
Im not that guy, but I live in the mountains and run slotted rotors. Fuck you and your high horse you attention whoring tripfagging wanna be know it all fuck.
>>15094614
I run drilled and slotted brake pads.
>>15094831
>Miata owner
>>15094821
Sorry, what makes you think I give a shit what you do m8?
>>15094614
Yea do it, and make sure you install them backwards like the jackass in this picture
>>15094863
Mostly you responding or are you admitting to being retarded?
>>15094863
Responding to someone asking a simple question and then being a smartass?
How about having a trip code?
You're so full of yourself you think you deserve to be recognized on an anonymous board for your shitty opinions. Fuck right off m8 and move out of mommies basement
>>15094896
>says the guy who's argument is "but it do it too"
People are correct when they say it won't affect performance during road driving, usually. If you're gonna drive like a nut for extended periods of time maybe, but the problem with road driving is you usually aren't driving at the limit for something like an hour straight and that's when it matters.
That being said, they aren't that expensive, so I dunno why people get so hostile about it.
I'd just go slotted if it were me, but I'd do the whole brake kit. new pads, calipers ect, fluid, steel lines. I like over kill.
>>15094908
>There are two of us
More than one person thinks you're pathetic kiddo
>>15094875
>backwards
>>15094693
what the fuck
>>15094921
Yes, backwards
>>15094916
is this supposed to matter to me?
>>15094967
Nope because you just admitted to being retarded
So like all other tripfags
>>15094978
I think you're just struggling to follow the conversation and assuming I am too.
>>15094934
power to weight m80
>>15094991
More like i don't want to waste brain cells to even understand how retarded you are being
>>15095007
>I didn't want to think all along!
>>15094614
I've seen sources that suggest anything more than just slotted is a mechanical waste
>>15095007
>>15094991
You two fairies need to suck each other off already
>>15094991
Says the tripfag, who is so retarded he can't remeber what he said so he needs to use a name
>>15095084
If you scroll up you'll see I followed the conversation just fine, but thanks for your concern.
I've had both slotted and drilled.
Couldn't tell the difference.
Just get a good blank or slotted vented disk, preferably two piece with aluminum or mag top hats. That's the track ready ticket.
If it's a street car just get one piece vented blanks. Remember if you get vented you'll need either new calipers or caliper spacers and don't cheap out.
I've pushed non-vented rotors pretty hard and they start glowing and you can definitely feel them fade on the downhill big time even in a light car, but non vented will be fine for a car that's mostly daily driven and never pushed very hard.
>>15094614
Stock OE brakes on my Corolla were pieces of shit. I drive mostly on the freeway and have to stop maybe 3 or 4 times both ways and they would always warp and just not stop very well.
Replaced them with EBC slotted and EBC ceramic pads, and going on 5 years now, so far so good. Car stops a lot faster and the main thing is no more warping. Not sure if its the fact the rotors are slotted or if OE Toyota brakes are just shitty but I've been happy with them.
>>15095211
are you sure they were oe or were they no name chinky shit
>>15095225
Bought the car used from a lady who had everything done at the local Toyota stealership so I figured they were OE. But who the fuck knows - those assholes could have put on 9.99 vatozone specials and charged her top dollar.
>>15094614
Just get blanks. There is literally no benefit to running slotted/drilled rotors any more. They only exist because they old motorsports pad materials would release gases between the rotor and the pad causing braking to lose effectiveness and slotting and drilling helped give space for these gasses to evacuate to. Modern brake pad compounds do not release these gasses so the slotted/drilled rotors aren't required any more but people like how they look so they are still made.
As mentioned, just get vented rotors, that is all that is needed now.
Just get vented. If they are good enough to stop my truck pulling 30k lbs they are good enough for whatever shitbox you have
>>15094693
>that pitiful swept area
>>15096782
>falling for the swept area meme
>>15094875
How do you even do that, I got drilled rotors and the box had in fucking IMPACT FONT and it took up 1/4 of the back of the box which side of the car it had to be installed on
>>15094693
Except not, shitty discs can hit over 800 Fahrenheit which in turn starts burning up the pads pretty fast, fluid is a different game all together
>>15094614
seriously OP get Kangaroo Paw rotors. they are the best in every way.
>>15094614
My rotors are normally blank ones, but i've both drilled and slotted them myself, that way i can have good looking brakes without spending a fortune.
>>15094614
Vented blank master race
>>15096968
if your brakes are hitting 800F and your pads and fluid can't deal with it a few holes won't make much difference - unless they're in the front bumper ducting air to your calipers
>Real Talk Here
Slotted rotors are shit
Drilled rotors are legit, (1) they save weight, (2) they allow air to get drawn through into the inner vent and be channeled out of the rotor. The holes also increase the surface area for cooling despite any air being drawn into the center ventilation slots. The top tier rotors are those with non symmetric drilled holes which fully wipe the rotor, but this is only seen on super expensive cars.
There is a reason expensive cars have drilled ventilated rotors on all four corners.
>inb4 drilled is a meme
Why do sportbikes all have them then?
REGARDLESS, PADS NOR ROTORS WILL MAKE YOU BRAKE FASTER. TIRES RETARD, TIRES.
>getting anything but vented blank rotors
literally why tho
>>15094765
6k RPM 4th gear? WTF
>>15097227
This
I can see that regular cars with regular drivers don't neccisarily need drilled rotors, but at the same time I see no disadvantage to having the drills and slots that everyone is so mad about
ie: it really doesn't matter, but if someone wants drilled rotors, that's their call
>>15097267
"Doing 75"
Assuming it's miles per hour, 6 doesn't seem that unreasonable depending on what he's driving
Just look at what top end rotors on GT3 cars are like: yep, slotted.
While we are on the subject, I have a question.
I have a 03 Honda Civic Ex and ive been having this problem. My car keeps making this griding noise like something a metal is grinding on the ground, but it wasnt that. So me being careless paid no mind to it cause it only makes it when i brake.
Then the weirdest thing happened when i was in a traffic light. I heard a sorta clank noise like chains being released and i couldnt brake like how i normally would. I can drive, but if i go a certain speed it will be hard for me to stop unless i press it down hard (not all the way to the floor)
So the question is, is it both the rotor and brake pads or just the brakes? Also where to find the cheapest parts if it is something serious indeed?
>>15097227
Drilled is used on sportbike because the unsprung weight savings are proportionally hugely greater than on a car. You're getting there, but still need to do more research.
>>15097272
It weakens the rotor. And having drilled + slotted is just fucking retarded.
>>15097160
I said shitty discs, kind the shit that is 230mm, discs that are 330mm+ are great at dissipation, ventilated ones more so. The point of vent discs are not that they cool down faster it's that their max heat rating is cooler so you get consistent breaking pressure without fade
>>15097298
Are you fucking with us?
Always wondered why cars dont run waved rotors?
Sportbikes are very different animals clearly, but some basics should transfer.
>>15097300
Weight matters despite the vehicle, and drilled ventilated rotors will always cool superior to solid ventilated rotors. Simple surface area.
>>15097310
What would eve be the point?
>>15097309
Nope serious. Im new to this car shit so im trying to learn more about it.
Or running the brake disks along the rim with the caliper on the inside of the radius like Buells?
>>15097310
idk the answer to that.
do any bikes run ventilated rotors? I assume that is why waved rotors are used?
>>15097319
Wave rotors shed water and dirt better, whilst increasing surface area (cooling/braking) without taking on much of a penalty for weight.
>>15097320
Google. How the fuck would anyone know what's wrong with your car after that vague ass statement. Did you get under it and make sure everything is tight? Have you checked your pads?
>>15097337
Get under it and do what
>>15097324
Vented as in slotted, or drilled or with the little rotors between the two sides?
Motorcycle brakes come in virtually every single config you could imagine.
>>15097339
Are your calipers missing a bolt? Are you low on brake fluid? Did you pop a brake line off?
>>15097337
It was nothing under that made it do that. My passanger side is small pad, but my driver side is on the rotor disc i believe.
>>15097329
Bike rotors are usually very thin. Car rotors are far more massive and generally vented up front at least.
>>15097341
Ventilated means "little rotors between the two sides" so two friction faces. Maybe big bikes have those?
>>15097323
God tier design btw. Patented tho, and no mfg will admit buell had a good idea
>>15097348
So your rotor is fucked up then..
>>15097356
I think. Didnt do like op pic did, but it has lines on it like a xbox disc or one of those old big ass cd's.
Im just confused that after that clank sound the grinding sound disappeared afterwards.
>>15097354
I have seen them on goldwings, but like I dont think they're necessary on bikes really. Consider the amount of airflow a bike's disk gets.
MotoGP brakes, the F1 of motorcycles basically. No slots, no drilled holes, no lobes. Granted they are also MotoGP brakes.
So on the third day of the seventh year of the sixth hour, thirty nine innocent children are sacrificed whilst a cat meows in a westerly direction with a butter knife stolen from a Denny's no more than nine minutes prior. Now if the cat is meowing in an eastern direction, we don't get MotoGP brake disks we get a vintage RC-30.
>>15097375
Your caliper is probably fucked as well.
ceramic composite brake disk porn
I bet there's only like 1 person on this board with non-oem vented discs.
>>15097395
That bike is using carbon-carbon brakes. Totally different animal. Those brakes have to be hot to work well.
FWIW, my 1988 Honda HawkGT had a vented rear rotor. The vents were tiny.
>>15097395
lol. I'm pretty sure the motogp brake discs are also ceramic or carbon fiber where drilled holes would be a structural issue.
For cars they are pretty legit. If your brakes OEM aren't drilled and/or you aren't buying a bbk i wouldn't waste your time unless you like the looks.
>>15097412
hnnng
>>15097460
my car has non-oem vented and drilled, but oem was the same?
>>15097315
Losing structural rigidity for a 3% unsprung weight saving makes more sense than losing it for a 0.03% unsprung weight saving. Keep researching and lose the attitude or you'll never learn.
>>15097298
Neither pads or rotors would cause what you describe, you have a more serious issue. Probably fucked your caliper piston somehow. Check your brake fluid, check if all four of your brakes work. Check if brake fluid is leaking anywhere. And next time your car sounds weird, ffs get it looked at instead of being a retard about it.
>>15097412
What's that cable that looks like it's rubbing on the pad?
>>15097460
They're the cheapest option though, so I bet there are plenty.
>>15097491
speedo, its not hooked up yet. It senses the magnetic flash of the rotor's spars.
>>15097485
>Losing structural rigidity for a 3% unsprung weight saving makes more sense than losing it for a 0.03% unsprung weight saving.
There is no structural rigidity issue with metallic rotors. They never, ever, crack like that. Besides, if they were at such high heat levels they were stress cracking then drilling holes would be a net benefit as it would contain the structural failure between two points versus a catastrophic break. This is why certain chassis in specific structures are drilled, simply to contain failures such as these.
>Keep researching and lose the attitude or you'll never learn.
I'm educated in at least the basics of this field. I'm down for technical conversation but don't pretend to be a condescending authority without citations. Obviously drilled and ventilated metallic rotors work. Please, show me one that failed with a crack that *wasn't* between wto purposefully created high stress concentration points.
>>15094914
>hour straight
Fuck off, try 5 minutes of downhill driving with pathetic stock rotor and pad compounds.
Glorious slotted master race at all times.
>>15097529
GEAR DOWN YOU RETARDED FAGGOT holy shit I didn't think people this dumb were allowed.
>>15097546
And i didn't think there was anybody so fucking stupid they don't understand what the downhill run is
>>15097546
Slots are a meme and (imo) don't do shit, but he is talking about brake fade. AKA, shitty pad material, small pads and rotors, solid rotors, and poor cooling channels.
>>15097522
You're full of shit. Vented blanks simply do not crack short of manufacturing errors, drilled has always been known to crack. Blanks that are then drilled are even worse, it's nothing to do with containing a failure, by drilling you are introducing the failure. The correct way to deal with excessive heat causing brake fade is to introduce more air or increase the diameter of the discs, not to start drilling and cutting like a fucking amateur. The only time it is for performance and not looks is on sportbikes, when it is for the proportionally great unsprung weight savings and easily warpable (ie. Unreliable due to drilling) rotors are a price motorcyclists consciously pay and accept as needing a higher level of knowledge to safely operate a motorcycle. Lose the attitude, you pleb.
>>15094914
I get wicked fade on my slotted if I go hektik for 30 miles in the mountains.
>>15097555
I'm still not understanding why you can't just gear down to save your brakes. Like are you abruptly accelerating and braking on a steep downhill or what the fuck are you doing?
>>15097557
Well yes, but there's zero reason you should be getting brake fade under normal driving. Racing yes, but in daily driving situations, you just keep your gears low and take it easy.
>>15097580
Are you NOT accelerating and braking on a steep downhill?
What kind've faggot are you?
>>15097562
>You're full of shit.
Yeah that is why expensive cars have drilled rotors. Sure fag.
>drilled has always been known to crack.
Sauce
>by drilling you are introducing the failure
You're increasing cooling and containing any would be cracks
>he correct way to deal with excessive heat causing brake fade is to introduce more air
Like by drilling?
>he only time it is for performance and not looks is on sportbikes
Works pretty great on sportcars and supercars fag
>Lose the attitude, you pleb.
Likewise. I'm not saying but drilled rotors on your shitbox you obviously drive, I'm saying cars that come with them stock obviously work.
Now please, show me ferraris with cracked rotors that *aren't* between two hole you fool.
>>15097580
>Well yes, but there's zero reason you should be getting brake fade under normal driving.
lol. some of us like spirited driving
>Racing yes, but in daily driving situations, you just keep your gears low and take it easy.
If your DD fades on your way to work buy a better car.
You sir, sound like a faggot
>>15097587
No. I coast down the hill in a gear appropriate to the speed of traffic. Most hills I don't touch any pedals at all.
>>15097593
You really have no fucking clue what the shit you are talking about.
>>15097606
Well then you're a fucking bitch.
Not everyone else is.
>>15097609
Well considering the fact I actually have taken a thermo and fluid dynamics class or two, and don't know of any cars where cross-drilled/ventilated rotors made of metallic materials are an issue...i'm goona say you are some pleb spewing memes you've read off the internet.
>citation needed
Cause I find it hard to believe you are smarter than the people who design sports cars. Cuz I'm not, and I am sure as fuck you are not.
>>15097618
You should probably start, considering above you said you drive some econobox with all el cheapo brake parts, then cry when you get brake fade.
>>15097627
Never said anything about an econobox, the vast majority of standard brakes are trash.
>>15097646
Are you driving a bloody minivan or what? Most """""sports""""" cars will have brake systems that are fine for anything less than the track.
>>15097622
Sounds like you got a c.
>>15097660
Brake system =/= standard rotor and pad material, moron. My 4-pot 320mms are excellent with some good rotors and pads, with cheap shit they would be shit.
>>15097662
If by "c" you mean I have a car, a technical education related to the conversation at hand, and a fully functioning mind that doesn't believe any and all bullshit people tell him, then yes.
Enjoy being second class anon. I'll check back for sauce on the cracking rotors when I wake up tomorrow. Maybe I'll forward your research to BMW and Ferrari and we'll both get rich! Silly fucks and their drilled rotors!
>>15097622
They do that shit so it looks cool you dipshit. No one runs drilled rotors for performance.
>>15097685
I meant like you aren't smart so you got a low grade. That shit you said was weird.
>>15097679
There is also zero reason to upgrade calipers, other than appearance (or if you're changing the size of the brakes alltogether, which is also retarded, other than for appearance). Calipers pretty much will never affect braking performance because minimal amounts of heat transfer to them.
91, mx5 cup cars etc use blank rotors
Wtac cars use blank rotors
open wheel racers use blank rotors
Midlife crisis super cars use fancy drilled rotors so they can charge 10k to replace them
Less surface area with drilled rotors means less area for heat to transfer from pads to rotor, holes that double as failure points are of no benefit to preventing brake fade or aiding in cooling, Get better compound pads if fade is an issue or learn to drive. If excessive heat is an issue then look into routing more airflow to the brakes themselves.
>>15097693
Lol k
>>15097693
>No one runs drilled rotors for performance.
Lighter weight
Better cooling
(Debatable) wiping for water/gasses
This is 100% objective and undeniable fact. Show me a fucking super car with metallic solid rotors you nig
>>15097698
An average grade is still better than the bachelors of arts you obviously have dumbass.
>>15097702
You're so ignorant yet the internet and Google is at your entire disposal, this thread is great
>>15097593
> Now please, show me ferraris with cracked rotors that *aren't* between two hole you fool
Oh, so the failure points creating a failure doesn't count as a failure? Some next level trolling anon
>>15097707
> lighter weight
Important for dirt bikes, irrelevant for a 3000lb+ car
> better cooling
Citation needed
>>15097710
You sure showed me
Do you also think exhaust back pressure is important? Lol
>>15097707
You forgot less friction surface. Less material to spread heat. And structurally weaker. Ha you did get a c.
>>15097702
>Less surface area with drilled rotors means less area for heat to transfer from pads to rotor, holes that double as failure points are of no benefit to preventing brake fade or aiding in cooling, Get better compound pads if fade is an issue or learn to drive. If excessive heat is an issue then look into routing more airflow to the brakes themselves.
I see you have no understanding of thermodynamics.
>>15097713
Thats not a failure, that is the intent.
I'm sorry but you are simply naive. I can't educate the unwilling. But who are we kidding, you drive a nissan sentra at best. Thank god you know more than the people who design sports cars and liter bikes. Thank you anon. You've changed my life today.
>>15097717
> better cooling
>Citation needed
Thanks for confirming you know nothing about convection. Dumbfuck. Why do you think surface area matters? Jesus christ, can you even tell me the equation for natural convection of a surface oriented vertically, let alone forced?
>>15097720
>You forgot less friction surface.
But increased cooling capabilities as the surface area is increased
>Less material to spread heat.
Lol. Its not a heat reservoir, that isn't how it works pleb
>And structurally weaker.
Yeah, but not to a point it matters, and when it does fail it contains cracks from being catastrophic in certain designs.
>Ha you did get a c.
Maybe, but you got a bachelors of arts
This is like second year engineering shit you child
>>15097722
Again, great job proving me wrong with your hot opinions
> that is the intent
Failure under stress is the intent? It sure is, how else can Ferrari get away with charging 10k to replace pads and rotors without taking labor into account :^)
>>15097733
You're so wrong you should be embarassed. And remembering some pde means jack shit you pompous maggot.
>>15097748
Sounds like you got fucking schooled
>>15097738
Awww yes anon you figured it out. It is the kikes with their jewish typewriters and totally not physics. It's not every day a bachelor's of arts major educates someone on physics but I'll be damned if you didn't destroy newton today. Thanks anon, you've changed my life and I owe it all to your narrow minded and persistent opinions without any factual bases. I mean who stupid of me to think one moron behind a computer was smarter than hundreds of years of educated professionals leading up to modern designs.
Can I write you in for president in lieu of Bernie Sanders this fall?
>>15097748
ibid
>>15097593
You know nothing about motor vehicle braking systems, sorry.
>>15097733
> unable to provide citation
> pretty insults
Thanks, I know I was right but further confirmation helps me sleep better at night
>>15097733
I know many bs engineering degree holders, and I can tell you they are all retarded.
A BS in just about any engineer field means absolutely nothing.
>>15097755
Roflmao the try hard /pol/ kiddy is super mad today
>>15097756
>>15097757
Sure honey. Did you get your engineering degree from a crackers jack box? ME TOO!
top kek I hope you're drunk or trolling
>>15097759
yeah but you are a retarded blue collar monkey, remind me why I should care?
>>15097761
Describe forced convection to me and how a cross drilled rotor is inferior for cooling and I swear to fucking god I'll blow my brains on livestream after killing your ex and her family
>>15097733
>brake discs not a heat sink
...what?
Relevant
https://www.youtube.com/watch?v=78wbht355R8
>>15097767
>not knowing the difference between a heat resivior and a heat sink
>>15097766
> still throwing insults around and failing to provide citations for his claims
Double Roflmao
Better start sending job applications out to McDonald's, kid. Your school bills gonna be something
>>15097776
How many posts have you made in this thread? And how many people do you think you've managed to convince?
>>15097776
>citations
This is like sophomore level physics bro. Come the fuck on.
>>15097782
Sophomore? What's that in the first World?
> bbbut muh drilled ferrari brakes
>>15097781
>And how many people do you think you've managed to convince?
At least one. Anon I just went out to my motorcycle and car, pulled off all six rotors, and epoxied the drilled holes in. On the car I even filled in the vents between the two halves as "more mass=better cooling." idk about you but I am looking forward to my fade less togue run tomorrow while giving an up yours to those jewish engineers trying to scam me.
we all owe anon. he is clearly a god among mere men
>daily reminder that even f1 cars have drilled rotors just not in the face
>>15097795
> this mad because you're wrong
Kek
>>15097795
>only six discs between a car and motorcycle
Anon, how poor are you?
>>15097795
Bruh get over it. No one runs cross drilled for performance. It's cool that you do. Your wrong but it's cool. Cool like those holes in your rotors.You know the ones that break your brakes on purpose because it's better to do that.
>>15097798
> vented, blank rotors
Someone should tell the f1 teams they are doing it wrong and need el cheapo cross drilled rotors from autozone
>>15097799
>>15097808
Explain to me the how a solid rotor has better cooling properties than a drilled rotor and I swear to fucking god I'll blow my brains out livestream.
Face it. You a cuck full of memes.
>>15097802
>only six discs between a car and motorcycle
kek that took me a second, Buell rider here
>>15097811
Someone should tell them that they should use metallic rotors instead of carbon fiber or ceramic you dumb nigger
>>15097816
The cooling difference is miniscule bro. As is the weight difference on a car. The structural difference is huge, though. Bike looks nice. Needs twin discs up front tho
>>15097816
You don't cool rotors by putting holes in them. You dump air on them. Putting holes in them is bad and you should feel bad.
>>15097811
https://www.apracing.com/products/race_car/brake_discs/ventilated_discs.aspx
>>15097816
Obviously it does because formula cars don't use drilled rotors :^)
>>15094765
downhill from where
>>15097816
Btw, no one said anything about solid rotors
You know the difference between solid and vented, yes?
>>15097827
>The cooling difference is miniscule bro.
Explain the math to me the buttercups
>As is the weight difference on a car.
Yeah, thats retarded slow poke. What does your yuro ass drive?
> The structural difference is huge, though.
Depends, every rotor is different. Obviously a supreme gentleman like yourself knows that
> Bike looks nice. Needs twin discs up front tho
Thanks to the fact the rotor is twice as long circumference wise one rotor works just as well. Also keeps unsprung weight down. Interesting system, the ZTL brakes, but they do the job.
>>15097833
>You don't cool rotors by putting holes in them.
Thats factually incorrect tho and is second year thermodynamics dude. You literally do cool things by putting holes and fins on shit.
>>15097839
Actually they use carbon fiber drilled rotors, regardless they aren't metallic and are outside this convo
PLEASE TELL ME YALL ARE YUROPOORS SO I FEEL LESS DISGUSTED
>>15097850
Same difference. Vented and solid/vented and drilled or solid/solid and solid/drilled (like a bike)
Maybe after your first year of engineering school you'll realize what an ass you are
>>15097853
> actually they use drilled rotors
Really? Where are the drilled holes?
>>15097857
They are either solid or vented, regardless of the face
Get your shut straight Mr big time scientist
>>15097865
what do you think those holes along the circumference are? that is also an old ass fucking brake rotor.
remind me again how holes = bad?
cause it seems like holes = more cooling. you are just too dumb to realize the orientation doesn't matter except in a dynamic situation.
>>15097875
doesn't your coffee shop open up in a few hours?
Regardless, fuck this, I'm out. Enjoy your shitboxes and B.A. degrees. I have a real job I'm not driving a $1500 shitbox to go to in the morning. I hope you beat the kikes at their drilled rotor meme game. Godspeed.
>>15097865
Those don't need to be because they're two piece vanes that extract heat better than cross drilled rotors.
Really they need a new name for them because on high end cars they're cast with the holes in them giving them the same strength as a solid rotor but with lower max heat retention that's consistent
>>15097889
Vents, not a drilled rotor
At this point you have to be trolling because no one is this retarded. Or you've resorted to trolling because you're so tired of being btfo
>>15097889
Wait you think vented rotors are drilled? Holy shit.
>>15097889
>Fuck this, I'm out.
>I'm too important to waste my time with this
It would have been less damaging to just say "You're right, thanks for showing me the flaws in my understanding", but no.
>>15097894
>>15097906
>>15097915
regardless, it doesn't matter. you have no understanding of thermodynamics. As i said before, explain to me forced or natural convection and i'll livestream my suicide.
enjoy life as a pleb. i got a real boy job to go to tomorrow that i'll be driving my sports car with...vented and drilled rotors on all four corners too.
gl fighting the good fight against the kikes tho
>>15097606
Im with you. I cant believe some people approach a turn or a stop literally a hundred yards with their brakelights on.
>>15094684
Hes not a semi truck. Intentially inducing engine wear to avoid wear on a replaceable brake pad is stupid.
>>15094614
If this is for a street car that you won't be taking to the track, just get blanks. Slotted/drilled rotors on a dedicated streetcar is mainly for just looks since you won't be pushing the car hard enough to really notice any performance difference.
>>15097699
>Calipers pretty much will never affect braking performance because minimal amounts of heat transfer to them.
ahahahahaha oh wow anon, nice joke
>>15098677
>engine wear
>>15097951
lol
>>15098677
Well, engine braking doesn't induce that much wear, if you don't do it too much and still keep the RPMs low. Downhill just leave it in the gear at a manageable rpm
I put Mayle blanks w/ Pagid pads on the M3.
I like slotted and drilled rotors but only if they're two-piece rotor big brake kits. One piece rotors look cheap as fuck.
>>15097303
threads about drilled vs blank not big brakes vs small
>>15097323
now this is clever
>>15104480
No.
Higher rotating mass, more unsprung mass, more prone to debris and rock damage.
The latter not so important with road bikes, but the formers much more so.
>>15094693
>jar jar binks: the car
![061314-2014-erik-buell-racing-1190rx-ruiz140611107242_web-633x422[1].jpg](https://i.imgur.com/WYIHUzv.jpg "061314-2014-erik-buell-racing-1190rx-ruiz140611107242 web-633x422[1]")
>>15104499
usually they run one disc and it works out lighter
Vented is the best, drilled/slotted rotors are more likely to kill you.
>>15104499
>Higher rotating mass, more unsprung mass
False, you only require one rotor/caliper vs two
![perimeterdisc[1].jpg](https://i.imgur.com/rDWcTVq.jpg "perimeterdisc[1]")