Quote:
Originally Posted by Ximian
XP20 pads are for heavier cars with a significant amount of aero and very sticky track tires. They are extremely aggressive and not suitable for road tires such as the Cup 2 or Cup 2R. They would often active ABS on track tires on my other car and that caused some issues with the caliper that's taken me two years to start figuring out.
XP12s should work well enough.
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Never hear about needing to match tire cohesion with pad/rotor friction. I had the issue of brakes exceeding tire friction on my big brake C5... Modulating the silly aggressive pad with 200TW tires was a challenge. PS4S and OEM is a good pairing, but then your move to Blue Stuff pads, or something more aggressive and the PS4S seem to fall off quicker as you ask more of them. Then on to Cup2, and the domino effect continues.