Bias vs Radial Slick

[Rory McNeil]

Originally Posted by J.R. Haddad

Chris, with an 8" rim you're getting reasonable growth with the Bias
tire. You will get next to no growth with the radial tire. That should result
in 3-400 more finish line RPM. J.R.

.........Except unless M/T has recently changed this, the 9X28 bias slick is actually less than 27 1/2 inches tall. So the finish line RPM may be fairly close.