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- เผยแพร่เมื่อ 13 ธ.ค. 2023
- Every automotive expert says your shaking brakes are from warped rotors. Conventional wisdom and just what seems to be "obvious" supports the idea of warped rotors.
Guess what; everyone is wrong. Brake rotors don't warp. It's impractical to think that they do, especially in normal every day driving situations. Extremely rare outliers aside, the brake rotor warping myth is sold as the everyday occurrence that happens to people all the time.
No, I am sorry, it's false. Listen to the podcast to hear the explanation of why rotor warping is a myth, and how to resolve shaking during braking. - ยานยนต์และพาหนะ
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The problem is that the majority of people don't know what the word "Warp" means. They think an uneven surface means it's warped. It's not possible for a brake Disc to warp, even when a Disc is glowing almost white hot it would crack or shatter before it would warp. Discs are made of Cast steel, not mild steel. I'm 67 and every time someone claims to have a warped Disc, I have proved to them that this is not the case.
Pulsation is caused by either a bad Calliper or Pad problem or a "Blue Spot" in a Disc caused by a fault in manufacture.
If you can skim a Disc to resolve your "Warping" problem, logic should tell you that it was never warped in the first place, but had an uneven surface. You can't skim out a Warp !
Some grown men actually believe their Discs can warp, then unwarp, then warp again, because the pulsation only happens when hot ! If you are capable of believing this, then there is no point in engaging in dialogue at all.
One guy said he knew for a FACT that Discs can warp because he had 3 sets of Discs on his car that still didn't cure it, so he sold the car ??? How do you argue with that kind of logic ?
I think a lot of misunderstanding would be cleared up by a Dictionary rather than a workshop manual. A cast Steel Disc cannot warp unless it's taken near to the temperature of the casting process.
If this was possible to do with a car, manufacturers wouldn't waste their money on a Blast Furnace. I'm afraid that most men now have a 5 year old's grasp on physics and the manufacturers are only too happy to keep quiet while everyone throws perfectly good Discs away and buys new ones.
"Warped Discs" as a term ranks right up there with the expression "Tranny blew up", it's not an observed diagnosis, it's a meme.
It's crazy how many people just can't get their mind off this warping myth! Thanks for the support!
VERY interesting! Thanks!! The "warped rotor" explanation never made sense to me. You mentioned "When you replace the brake pads, strip away the old transfer layer and put down a new transfer layer you'll notice better braking." Do you have a vid talking about how to do that or the best way to do that? Or is it simple enough to not need a vid cuz I'm not entirely certain how to do that.
great video! thank you for taking the time. what's your rotor and brake recommendation for a 2021 tlx type s? Specifically, for the owner that doesn't track, but will absolutely take advantage of a winding wide open stretch of road?
So far we have had the most success with RB XT910 pads and rotors. We love them on our TLX (see other TLX videos on our channel). www.heeltoeauto.com/index.php?p=catalog&mode=search&search_in=all&search_str=racingbrake+tlx
No disagreement at all. Talk to your brake supplier (I buy from R-1 Concepts) and they can recommend pads for your driving style and vehicle. I mean no hate, but all of my Honda's had more brake issues than my Lexus, Hyundai or Fords. If I'm in a very hot environment, I bed my brakes a couple of times per year. And here's another can of worms, but I have less transfer layer issues with slotted rotors.
I have cured “warped rotors” by doing a break-in/ burn-in
I have a 2017 toyota sequoia with 41k kn the odo. Last November i replaced the front rotors and pads. Stoptech slotted rotor and hawk lts pads. Bedding according to Hawk's instructions on the box. So far the brake have less than 3000 miles on it. But i notice that from moderate to firm pressure on the brake will cause pulsating and steering wheel to shakes/vibrate hard. But if i am easy on the pedal it is smooth. Stopping from 60+mph with medium pressure it will pulsate.
What does this mean? This issue is driving me crazy. I've replaced rotors and pads on our other vehicles and non have this issue.
Break-in / burn-in procedure, that is, similar to that recommended by StopTech. I my mind this proves the theory of uneven transfer layer as the cause of brake pulsing or shaking.
It's pretty widely accepted that the bedding in procedure is critical to effective braking, but somehow it gets lost when the shaking starts and people look straight at the rotor.
@kristiang.5237
4 months ago
I agree. Back in the 60's when only foreign cars, Jag’s, Porsche, M-B, TR4’s, MGB’s, had disc brakes, we seldom had this issue. We could change pads several times on a rotor as long as it wasn't heavily grooved. Even on track cars. But then the domestic cars started using disc brakes and they started cutting corners to save a buck. Chevrolet was one of the worst.
That said, I like the idea, but I really think it is a bit of an overreach. If the rotor isn’t warped then how do you explain that when one starts to cut it, it has high spots and low spots. You can hear it on the cutting lathe as it rotates, hits, and miss. And it is not braking pad material it is removing but in fact it is metal that is being removed.
Also, if it were just brake pad material then a quick clean up with a good piece of Emory cloth would solve the problem. Sand then down, cleaning all brake material off and “Bob’s your uncle” the pulsing goes away. But that doesn’t work.
So is there any point in getting expensive rotors then? Sounds like your local AutoZone rotor would work just as well as long as you have good pads
There definitely can be yes! Material composition (ie, higher carbon content) and post-processing like heat treatment and cryo treatment harden rotors which extend the life. Rotors with curved vanes vs straight ones will shed heat more efficiently. Two-piece rotors will shed heat better and weigh less as well. Larger rotors have more mass which allows them to take on more heat before they max out and start overheating the pads. But for regular road use, those benefits are often not worth the cost. But try telling a real enthusiast that. THey want fancy parts.
My 2021 TLX is doing this 😮
No doubt, almost 100% the reason for this video is to educate TLX people. We have parts to fix it though! Shop Heeltoe!
The current generation Passport (which i own) is probably the most poorly engineered braking Honda ive ever experienced. Upgraded pads and rotors solved the issue entirely. Honda specs the weakest pads for that large vehicle. Its ridiculous.
What pads did you use?
@@Heeltoe. I went for the Stoptech street pads and have been really happy with them. Paired with the Stoptech slotted rotors. Did all 4 corners.
While I respect your opinion and I agree with some of the things you’ve said, I disagree on the main topic. Brake rotors can and do warp. This is caused by repeated cycles of heating and cooling. Rotor composition and pad bedding process (or lack thereof) will also have a big effect on how long it takes for this to happen and to what extent. High carbon content and cryogenics will greatly delay and reduce the effect, so yes, purchasing higher quality rotors is a good thing.
Thanks for the comment! We never said that rotors can't warp, just that the vast majority of time they do not. The myth is that it happens all the time. It doesn't. The knee-jerk reaction to brakes shaking is "warped rotors" and nearly every time this is false.
That’s NOT a warped rotor and you are flat out wrong. If your ROTOR was WARPED it would not spin inside the caliper. Even the cheapest rotors on the market are made of CAST STEEL that could not warp at the heats applied during the heaviest of braking. Even at plus 700° It would take literal torches to attempt to warp them. The only thing you’ve ever felt with your brake rotor is inconsistency of brake pad material being laid across your brake rotor surface. In turn, giving you the feeling of “rotor being warped”. You’ve never warped a rotor, regardless of what you think.
@@permabulk1454 have you ever heard of or seen brake rotors being turned/cut on a lathe? What are they cutting then… brake pad material? I think not.
What does all your ranting and raving about new microphones and everything have to do with warped brake rotors? Who really cares that you got all this new stuff in cyber week get to the video of warped brake rotors we don't care