They are going on my 15x8 summitracing wheels, i have a 12 bolt with 411 gears and i was wondering what tire size i should go with? Am pushing 366rwhp and 510rwhp on nitrous. Last time i test my car on the bottle with my 315-40-17 tires i had to shift 5th gear to finish the 1/4 mile, sucks!

 

What is your trap speed? stock 6 speed? max rpms? rear gear?

 

Last time i run it was with my 17inch wheels 315/40/17 tires and i trap at 115,yes i have a stock t56, max rpms 5,700 and i have 411 gears

 

If you could fit like 29" tires 4th gear would take you to about 119mph. basically i just used this potential speed calculator, and played with the numbers. http://www.csgnetwork.com/speedcalc.html

 

Thanks bud, my buddy has a set of 28s I'll try see how they work. Once again thank you.

 

No problem man, good luck.