My brake light came on and i've heard you have to change pads and rotors. Not just the pads. Is this True? And if so what make the 1998 e36 M3's so unique that that has to be done.
I had a 78 300cd benz, and though i realize the m3 is in a whole different class, i never changed the rotors on that benz because the rotors still had plenty of life in them.
Just trying to get to the bottum of this.
You don't absolutely have to change the rotors, but it's not a bad idea. BMW rotors are softer than most, and the new pads will immediately adopt the worn characteristics of the old rotor, i.e. grooves etc.
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