Originally Posted by harrythesnotgobbler
Strange, as ive taken a number of discs of, and measured the run out using a dti, 2 of them(dti's) once when we were experimenting, on opposite sides of the disc and it showed they were warped, I have faced off discs once to prove it was the cause of the vibration, then replaced the discs, this cured the problem.
I dont disbelieve in the theory they put forward, I just do not believe it is the only answer......ever.
its not theory, its fact, both on how brakes work and the cure to 'warping'! I have done it and it works. Many modern cars suffer from it as no one uses their handbrake properly, and in higher perfromance cars, or ones where the brakes often get hot, its very common.
replace discs if you must, but if you sit on footbrake with hot pads they will 'warp' again, and when they do you can see the pad imprint!
This is not hearsay - their site is based on the scientific fact, and I can say for sure that for my 'warped' discs they were very right, as I explained
If you have braking vibration there could be other causes, but this one is the most likely these days, and there fix is worth a good go before you fork out for new discs every year! and the preventitive note to use handbrake when staitionary works 3 sets of discs in 30K miles, and the third set 'warped' exactly as the last ones had, I employed the fix, and prventtion and 17K later all is well, never a judder.