Best back spacing for drag radials

[hotrodgary]

I'm thinking of new rear wheels/tires for next year. Uncertain if 15's or 16's. ?? Does stock B.S. fit best? Is it 3 3/4" or 3 37/8" ? I don't want everything sticking out too far and worry about body rub with hard launch or bad bumps. Thank you ! gary L. Detroit area

 

[grandnash84]

i just put some 275/60 15 with no rubing on mine.

 

[UNGN]

With 275/60's and T-type wheels, they will only rub the frame in hard turns. With '86-87 GN wheels, the will rub the frame in turns a little more.

275/50's rub the frame a little more than the 60's.

 

[Clark6]

i have mickeyts et street drag radials on the centerline rims they're 275/50/15 no rub at all anywhere, dont know the exact back space either 3 1/2 or 3/3/4.

i just bought a slick with a 3.5 backspace on a 28/9/15 mt mickey thompson wheel i mounted them on yesterday no scrub at all good clearance all the way around. had soo much room i thought id get a 10" with a 4 in back space. next time.....