[Rick955]

When I went from my 335 M-Sport to my first M3 in 2015, I found the M3 ride to actually be better than the 335... the 335 had run flats. Those are the worst! I stayed away from the run flats on both the M3's and even with 19's x 4 it was fine. I'll be curious how this new one rides with the 20's in the rear... not much rubber there. If you are really concerned about ride you might want to roll with the 18/19 setup to get a bit more rubber to dampen things a bit. I remember on the 2015 there was one road that always had a jarring part where the two sections met. When I put the winter tires and wheels on, (18's), it was much better rolling over that section of road than it was with the summer 19's. The 2018 was better in that same section even with the 19's (never put winters on that one). So it will be interesting to see how the 2021 does. So many variables. But the bottom line, as many said above, the M3/4 isn't going to be a "soft" ride in any configuration.