The GN my son and I are restoring will see about 6k miles a year, so we're debating whether to go with 235/60/15 all the way around for rotation purposes, or go with the 235's in front, and get a couple of widened stock rims in the 15x8 size and go with a 255 or bigger tire in the rear. If we go that route, the car will look cooler, but I think we'll be putting new fronts on once a year. What do you guys do for tire sizes on your frequently driven Turbo Regals?