Bias vs Radial Slick
 

I have 28 x 9 M/T Bias slicks on my car right now. If I switch to a 28" Radial, can I expect much finish line RPM difference? Anyone have any finish line RPM info they can share when switching from Bias to Radial on the same size advertised tire on?

Re: Bias vs Radial Slick
 

Chris, what size rim?

Re: Bias vs Radial Slick
 

8"

Re: Bias vs Radial Slick
 

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.

Re: Bias vs Radial Slick
 

.........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.

Re: Bias vs Radial Slick
 

27.3" dia with 86" circumference for the bias, 28"dia with 87.8 circumference for the pro-bracket radial.

Re: Bias vs Radial Slick
 

Run 28x9 M/T Bias and Radial ProBracket...
Only noticed a bit more stability at 100-105 mph with the Radial

Saw some ET improvement. Not much.

Re: Bias vs Radial Slick
 

Chris, you will notice around 200 rpm difference.....possibly a little less