I'm not running "drag radials", as in street legal tires, but I'm running a radial slick. 32-13.60 x 15 phoenix on a 15 x 14 rim.
I run 16.5-17 lbs. No tubes, no screws.
3550 race weight, best of 1.39 60', 9.92 @ 135.

Tires have moved maybe an inch since I put them on 2 yrs ago.