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380 Posts
I've had Porterfield R4S pads on my Solstice GXP for the last 7 years and I've been very, very happy with them. The thing I like about the R4S is that they have very fine control which allows you to easily get just the right amount of stopping without relying on the ABS to decide for you.We ran Porterfield pads on our 2000 Miata for AutoX this year and feedback from the driver was less than stellar. much like the factory pads