I'm curious to know if I have the room to put 37x12.5 R17 on my Ford F-150 Super crew FX4. I have a 4 inch Rancho suspension lift with 315/70 R17 right now. Any insight would help. S/F

 

I don't think so.

 

It would be very very tight. Although a member on here did put 37's on with just a spacer, he did not keep them on long because he could barely turn the wheels. I would say at the VERY LEAST you would need a 6" suspension but even then you would have to do a lot of trimming and it would still rub. If you want 37's I'd say go with an 8" lift. Then you'd have plenty of room

 

Thanks for the speedy help. I'll stick with the 35's, however do you think 13.5 will be to wide?

 

No, not with the right wheel. A lot of people run 325mm (13.00 inch) wide tires with 9 inch wide wheels with 5 to 6 inches of backspacing.

 

Thanks wandell, now it's time to see who gets my money