I can say that you DON"T have to factor in the wear with the new pads when measuring the rotors... BMW accounts for that. What we do at the dealership (for cars under warranty as it is controlled by BMW) is if the rotors are within specs we put a stop squeal solution on the new pads (which is merely graphite powder suspended in an alcohol solution). What that does is help keep the pads cool as you set them in as the pads are a fresh/flat surface and the rotors have small grooves cut in them. But usually (about 30-40% of the time) the cars will come in later with a brake squeal caused by the lip on the rotor and then we are allowed to change the rotors...

But on customer pay cars that the rotors are within specs I at least recommend rotors. Bottom line is, if you have the extra funds, go for the rotors. If you are tight due to the current economy, you can go without with the expectation of some future slight squealing as a possibility.

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"When you do things right, people won't be sure you've done anything at all" (Bender, futurama)

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X5 pics

RIP 4.6is.....

2003 4.6is