Quote:
Originally Posted by JCL
Side note, but rotors don't usually warp, shops and others just call if warping. You get a deposition of pad material on the rotor as a matter of course, and if it is uneven, it produces a pulsing in the pedal. It can be very slight, but if there is any looseness in the suspension it will be enough to start the shaking. Turning the rotors gives you a new clean friction surface (if there is sufficient material there to turn them) but if the pads deposited unevenly on those rotors the first time there is nothing changing that would stop them doing it again. It is the combination of the pad characteristics, the surface finish on the rotors (modified by the drilling and slotting), and your driving habits. Just expect it to happen again.
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JCL, you are a wealth of great knowledge. After lots of research I discovered the pulsing could be a number of things and only once did I learn it might be these deposits you speak of. I suspected this might be the case and have just lived with it.
I purchased this vehicle with the after market rotors and bigger Brembo brakes. I have put over 30K miles and the pads still look like new. I have never owned a vehicle with drilled/slotted rotors but if faced with having to replace rotors I would go back to stock. I am not a fan.
On my wife's X5 we have replaced the front pads twice and the rears once, and replaced rotors all the way around at about 100K. I am not hard on brakes. I have an 01 GMC 2500HD that I bought new with over 70K miles. A lot of those miles have been used to pull trailers and the break pads have never been replaced.
Thanks for your input.
01-07-2012, 09:58 AM
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