I'm on 19's, don't go over 45 tall or your speedo will be off. 40 is 5 mph slower at 60, 45 is 1 mph off at 60. 50 i think is almost 5mph faster. As for the wheels, I almost bought something very similar to those before I got my Zedds. I was looking at Rota Grids for awhile and there was a 7 spoke one i looked at but cant remember the name of the brand.