Pete..no tubs! I run a P295-65R15 tire on a 8" rim. My slicks are 9"x29"..but have to sell them and go back to a 30" tire to bring down the revs in the traps! 67-6800rpm is a little higher than I'd like to go. With 30's I would trap at 64-6500rpm. Just got back from your neck of the woods today..spent the last 3 days in Manistique,hare hunting! LOTS of bunnies! Randy