I have a 1st gen rx7 with 15"x7" alloys and 225x50x15" Yokohama AO32R tyres on the rear, i've been taking the car down the 1/4 mile every week for 5-10 runs per time for a few weeks, my best time is 13.4 @ 111.8 mph, my highest trapp speed being 115 mph.

even though they are very sticky tyres they still spin from 1st gear to mid 3rd, so i figure if i can eliminate the loss of traction that it would be good for taking about 2 sec off my e.t.

The problem is that without tubbing my rear end that i am limited to tyre choice.

What do u guys use ?

i am in New Zealand (thank god)

Cheers