according to your website:
if you go from stock 17" 225/45 to 255/30 on 19"s
the difference at 60mph would be 0.1229702033738 more.
so with 17" rims at 60mph you would be doing 60.1229702033738 with 19" rims
even at 150mph the diff is 0.3074255084345
