We are in the process of restoring a Class 8 truck, SB Chevy 600 hp prox. Planning on running SNORE TT or Class 8 in Snore, More or BITD if other Class 8s enter. Im going to be widening the rear housing, replacing the rear axels, gears, brakes and adding new hubs. Truck has been on 37s all its life. I have been thinking of regearing for the new BFG 40s. Working off the reasoning of the bigger the tire the smaller the bump. Several 1450 and 8 trucks have switched. Some have said 40s are for TTs and I replyed, 4WD is for rock crawlers but TTs are now running AWD! I wanted to hear some feedback positive or negative about making the switch?