Completed my 670 mile round trip, and well and truly broke in the MPS4s. To sum it up : wow.
I really wasn't expecting much difference from the MPSS, and perhaps it's the quality alignment I had done while rolling tired tires. But the 4s are fantastic. Turn-in is sharp, but impacts are not. Car responds all of a piece. Responsive. Balanced. Loads of grip. So much grip there was no way to test them out as they approach their limits. Eibach springs, Koni sports, M3 arb, RSFB inserts, a bit of negative camber, and these tires. The car responds and drives the way I knew a 1er could, but it never quite had before.
Love em. Really.
Only had one rainy morning, so no hydroplaning test. But I drove like it was dry, and had no issues.
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