Originally Posted by C63fora2w1

As some of you may know I come from a drag racing background had have a little experience with this subject. Generally you want to run the widest tire you can possibly fit to achieve the best grip. I agree that overall diameter plays a big role and thats why the second number (275-XX-17) makes a difference. You want enough sidwall to allow the tire to flex and grip. I used to run the MT ET's 26x9x15 and would routinely pull a 1.68 60ft in a first gen camaro with 450hp and 480 tq. The drag radials are a compromise on performance but are still good. I can vouch for the Nitto 555R's they hook hard and MT is also a good bet.

There are some good calculators out there to help u figure your tire diameter and effect on final drive ratio witch affects ET. http://www.wallaceracing.com/calc-gear-tire-rpm-mph.php

www.wallaceracing.com/Calculators.htm

Hope this helps.

Originally Posted by mr747

i done a 1.64 60ft with 225 50 16 hoosiers and a 1.45 with 215 60 15s but broke the gearbox

yes yes it will hook with those 245 tyres

bigger tyres doesnt mean it will hook better its a combination

Hagi hooks with 225 50 16s

Originally Posted by N I L

Zero issues. Tallest tire you can fit for best 60 ft/traps