Hi Guys!

Need your help on this subject. I have a1969 Dodge Superbee, with 500" motor 550hp, and 4 speed. 1st and 2nd gear are useless as I cannot keep it on the ground - TRACTION! It has a 8-3/4 rearend with 3.91 gears and super stock springs in stock location.

What is the largest street/drag radial I can put in the wheel wells? I have 15x8 wheels and could go to 15x10 if necessary. What backspacing should I go with. The 15x8's have 4" backspacing.

I am not able to go trial and error, obviously because of the cost. Mount them you buy them.

So, I am going to you guys for help

Thanks, Tom!