I have slotted and drilled. No problems at all and would not track or auto x without them. The pads would glaze over at the track before I got the new rotors. I think you will be very happy with them. Plus they look better IMO.
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http://www.martinlansky.com/Coppermi...01/W_humps.jpg
'03 Midnight Blue
18" Chromes//Drilled and slotted rotors//pedal upgrade//Alum. Door sills//KSPORT Coilovers//Short Shifter/Strut braces/Clear sides/Hard Top/Speedster humps/Intake//Leather GT3 seats/REVO chip with SPS2
'04 CLK55 AMG 367HP!
'86 944 Guards Red & MINT!
'69 911 Black
PCA Member -Northern Ohio
Cancer Survivor
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