Plenty of debate previously on the m3cutters forum. There was some who thought it was a huge improvement with grip and others that really didn't like them due to the softer more square sidewall (felt squishy apparently). If it helps my rears are almost done and I'll be going PS4S with MPSS on the front. With so much difference of opinion I thought I'd try it and make my own mind up.
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YMB M4
E93 320d Msport - sadly gone to the salvage yard.
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