See, I adore the stock 1M in a way words cannot express, but the standard-issue M5... good as it is, there are indeed a few flaws. But after driving the Dinan S1 M5 around the Monterey Peninsula ...

It hits 30 mph in 1.1 seconds, a brain-scrambling number that matches the F90 M5 Comp. The 60-mph and 100-mph times grow by 0.3 second each to 3.0 and 6.7 seconds, respectively, but the new M5 ...