Could be a warped rotor? Its a common misconception that rotors can warp however, they don't warp. The vibration is because of uneven pad wear and debris on the rotor.

 

What tire would you rather have blow, the front tires of back tires? Back tires for sure. Your front tire blows it's going to rip the wheel out of your hand.

I laugh everytime I go to a tire store and they try to tell me to put the new ones on the back. It's much easier to control a rear tire blow out then it is a front.

 

i dont know where you heard that but toyota did a brake upgrade on the tundras because of the rotors warping. so if the actuall company talks about warping rotors im sure the rotors actually warp. what happens is when the brakes get hot because of friction they warp and get distorted. when the brakes cool back down they return back to what they would usally look like. so when ever you step on the brakes they shuder because of the friction the pads and rotors make. an easy way to tell if you have warped rotors is the rotors are uneven colors like blue.

 

Please explain why rotors are machined back to spec then? And why when I machine my rotors, they contact the cutting bit on the lathe for only part of the rotation (meaning they're physically warped)?

 

ya what he said...

 

Toyota didn't come up with the Tundra brake upgrade it was done my individual owners. Unless your talking about an actual Tundra brake upgrade done on Tundras because of common warping which I've never heard of. There is the TRD Big Brake Kit for Tundras only, but thats just for if you want improved stopping power, not the recommended remedy for warping.

 

all the tundras originally came with 199mm calipers and i forget the width of the rotors but the coustomers were complaining about brake warpage so on the newer model tundras they have 231mm calipers and 5mm thicker rotors then the old tundras. i know this because my 4runner has ethier 05 or 07 tundra 231mm calipers with the bigger rotors. so it was an upgrade but more of a remodel.

 

^^^^ You guys are cracking me up!!!!Rawkerxx did you fix the problem??

 

This link explains about what you are asking. I'm not saying warping doesn't happen. To me though, the reasoning in this article makes sense.

http://www.stoptech.com/tech_info/wp...rakedisk.shtml

 

modlite if you have a rear flat most likely you will spin out and end up faceing the wrong way, the tire store is going by what his insurance tells him studies have shown it is easier to control a flat front then a rear .

 

If the warping is caused only by the uneven transfer of the pad material, which according to this guy is invisible, then why don't the new tundra rotors have the same problem? The heat generated on the pad surface is exactly the same as the 4runner brakes, but the tundra rotors don't warp because of the thicker design and their ability to absorb more heat. If it were invisible uneven pad wear, then the tundra rotors would have no benefit.

 

I think because the tundra rotors are bigger and thicker they do not get as hot. So the heat does not build up enough for the material transfer to happen. Both the pads and the rotor have to get hot enough for the materials to transfer. Just my 2 cents...

 

Well, whether they're actually warping or not, the tundra upgrade is a huge help. Whether it's material transfer or warping, they both cause the same problems and symptoms, and both are cured the same way so i guess it doesn't really matter what you call it.

 

I agree 100%.

 

can't we argue some more?