I've got a set of 275 60-15 MT drag radials and i like the way they hook, my track has a lousy track prep, so I had to get the biggest tire i could get my hands on. I have a set of Dick Miller racing (dickmillerracing.com) upper control arm relocation brackets, like the edelbrocks and lakewoods just shorter. I've gone as fast a 1.75 when the IHRA took over track prep and I average 1.78-1.81 most of time on our sub-par track. BTW, the car weighs about 3800 lbs with me in it and runs 13.0's to 13.20's depending on the air. Its got a 3800 stall that flashes at 4400 on launch, I'll footbrake it up to 1200 rpm on the line, any higher and it starts to load up the suspension and it doesn't hit the tires as hard and slows my 60' down a lot.