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I have been running the porterfield r4-s pads for about 9 months and I really love them. They have much better fade resistance than stock, and are SILENT. The first stop of the day always requires a bit more effort than usual, but after that it's all good. Whenever I drive my roommate's 335 with stock pads I almost rear end people because it doesn't stop as well as mine from high speed. I am extremely hard on brakes, and I am very pleased with these pads.
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| PROcede Rev3 | Vishnu Meth | DCI | BMW Perf. Exhaust | AR Coated/Catless | CP-E FMIC | Quaife | |