Quote:
Originally Posted by JusticePete
The primary benefit of a two piece is lighter weight so less rotating mass and improved braking. The slotted and cross drilled is a bit of a carry over from older pads that emitted gasses that reduced brake efficiency. Modern pad technology has eliminated that issue. The holes lighten the rotor and in theory improve cooling. Cross drilling can create a number of issues in cars that are driven hard on track. That is why I was asking what the the OP's goal was.
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True, cross drilled rotors start to crack under hard driving conditions.