Tire size help!!!
 

This is probably a shot in the dark....but....i was wondering if anyone out there could tell me the largest tire size that i can fit on a 2004 F-150 4x4, with a 3" body lift and 2 1/2" coil spacers???
I would rather not cut fenders...so...im wondering if 37's are possible?...or just what is largest....i have 17" wheels.

I really need some help....thank you.

P.S. My current size is LT315/70/17.

I don't think you can fit a 37x12.50 unless you use the OEM wheels. I'd stick with the 35's.