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Check with BAER and Wildwood, either one of them highly recommend AGAINST drilled rotors ....period. Heat build up is tremendous, and we've tried them both by the way. One of my original DV's used professionally drilled rotors, half way through the race the brakes were gone and the car started pulling a different direction everytime the brakes were applied.
Pulled the wheels and "every" hole had stress cracks leading from all the edges! We have since gone to "grooved" rotors on all our cars that even drive by a track, let alone get on one!
DV...cross drilling is bad!
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