Along with your your tire size I'm considering going to a 6.50x16" tire on my 55' 1/2 ton truck. Would there be a problem upgrading from my stock 6.70x15" tires, and what is the actual width of a 6.50x16" rim? I'm not even sure what the width of my 6.70x15" rims are? My intent is to lower the rpms.The 3.90 gears tend to run those rpms. up ther mighty quick. THANKS ALOT THERE AMIGOS
