I got away from solid rotors because of pad float while driving in wet conditions. With the new rotors in wet hwy conditions the brakes are stopping the INSTANT I hit the pedal. With solid rotors I had about 1 sec of pad hydroplane in heavy rain @ 80 mph, that adds about 120 feet to stopping distance to solid rotors vs drilled/slotted. MASSIVE difference!

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'03 X5 4.4 Sport, last of the M62s (8-03 build date)
I believe in deadication to craftmanship in a world of mediocrity!