Quote:

a radial will not expand like a bias ply at the top end ,where a bias ply will grow, get taller, and lower your gear.

A radial will not grow, maintaining the circumference of the tire through the duration of the run.

That is why a radial will be faster.



That's not the only reason.......Stiff sidewall tires typically 60 foot better.....so it can't be because of tire growth difference.....

If you can't handle the truth, you're living a lie.......