M/T Radial for the Super 10 question
 

For the up-coming D 4 Lucas race in Shreveport I will change to a M/T Radial.

*On the truck now is M/T 3074S [14 x 32 stiff sidewall] mounted in 15" wide wheel

I see two choices for me with M/T radial;

* M/T #3073R is 13.5 x 31.9 with 100 rollout [I think this is the best choice]

or

*M/T #3074R which is 14 x 32.2 with 101.7 rollout

Also, what about the 13.5" wide radial on a 15" wide wheel? Would a 14" wide wheel be better or not much difference?

Re: M/T Radial for the Super 10 question
 

My car picked up 0.13 from bias to radial. You probably need the shorter tire. I run the 100 inch roll out Hoosier radial on my car with a 5.86 gear. 132 mph at 8600 rpm.