I will agree here that bombing hills on 50's is not all that fun, but my point was more along the lines of, if I roll in, carve a corner and then tear through a long grind, I dont think 60mm's are gonna help dude that do the all to familiar, drop in rock to fakie, tailstall, axle stall, feeble, then pop out.
If I know what I'm doingit doesnt really matter that the wheels are small. Also when was the last time you saw someone say nollie nosegrinding a ledge over 18 inches on 58's?