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Old 03-03-2012, 11:36 AM
hedshrnk hedshrnk is offline
Location: boston
Join Date: Oct 2010
Posts: 20
Mein Auto: 2000 528
Originally Posted by TRS550 View Post
????? If you've ever had a front wheel off on a car with warped rotors and put a dial indicator up against it, you'll believe in the concept of a warped rotor.

Just because it hasn't happened to you, doesn't mean it doesn't happen.
It is a very common error people make in putting a dial indicator on a rotor and assuming the errant reading indicates a "warped rotor". What you are seeing is uneven rotor wear due to worn or damaged pads, not warpage. There are literally dozens of sources available online which discuss the myth of the "warped rotor". Please note, I am not saying it is impossible for a rotor to warp, just unlikely in the extreme.

A much more likely cause would be failed thrust arm bushings, as posted by others.
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