Originally Posted by
ashtonsser I ran 22X8X15 m/ts with my t25 setup, s4 cams, tubular manifold, open 3" downpipe, 12psi of boost. Pulled 1.7 60 ft's with them set at 10psi on b14 se-r wheels. Roughly 250-260whp
My trap speed was 110mph in the 1/4 and I was crossing at about 7500 in 4th gear. Perfect size slick for that power. Traction all the way down the track in every gear ran 12.4@110mph. 1/8th mile was a 7.87@88mph and I was at about 8k in 3rd gear.
I was using a stock trans as well. For you in the 1/8th mile a 23" slick would probably be perfect for you. That will get you to about 95-96mph in 3rd. You definitely dont want to have to shift to 4th just before the end.
I had a similar setup. 22" M/T slicks being spun by a GTI-R T28, S4, 286whp/245wtq dynoed the day before. I ran a 12.301@113.55 with IIRC a 1.8 second 60 foot time. I don't think the 22s will be too small, but I also don't think the 24 will be too big. I would probably go with the larger slick in case you end up making even more power. I wish I had.