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Those RS4's sound good. I'm sure rotating a true square set helps the wear. It also helps that the RS4 start with 8.9/32 tread depth new. Compared to the SC3 with 7/32 and the 3R with only 5/32 according to the specs. I'm staying stock for now since I can get them at a low price. My original SC3 have 8 track days and 4000 miles on them and the rears are about to the wear bars with more life left on the fronts.
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