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06-27-2001, 11:07 AM
I wonder how much "better" the crossed drilled rotors would be. Turner Motorsports sells them. Think I'll get them when my rotors go in the future.

GregW in Oregon
06-27-2001, 11:40 AM
I purchased them from Turner ($935., incl. shipping). They save 1.5 lb. each front wheel and 1 lb. each rear wheel. Look cool.

actually drive, that will save weight too! JM (g)
06-27-2001, 12:05 PM

06-27-2001, 12:22 PM
...even a few pounds of unsprung weight (weight on the outside end of the suspension) can make a huge difference.

2002 smg-2 silver M3
06-27-2001, 12:31 PM
True, can't wait for ceramic brakes for Next gen M3 (hopefully), that should save another 20 or so pounds..

GregW in Oregon
06-27-2001, 12:41 PM

06-27-2001, 12:48 PM
I'd like to know if they're more or less proned to warpage. I know that's what the crossdrilling is for but, actual application info would be appreciated. WHo is installing them BMW? If so does this still count in the factory warranty?

06-27-2001, 12:54 PM
There are a host of negatives that accompany heavy suspension components. So anything you can do to reduce that mass is a good thing.
Lighter brake rotors reduce unsprung weight so your suspension can better follow road contours and keep your tires where they belong.

Additionaly brake rotors spin, and spinning mass functions like a top and tends to not want to change direction.

This effect increases the farther out from center point the mass is located.

These are bad things where performance is a concern.

It may seem fanatical, but it's details that seperate BMW's from Chevys.

If that's not enough for you they look cool too.

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