I am about to have a six inch lift installed and am unsure on tires. This will be six inch of suspension and three of bodylift. Right now it clears 325/65/18 with an offset of 18mm I have 18x9 kmc xd hoss. With 1.5 inch wheel spacers

Which of these tires would work the best.
Size weight load Max weight Rim Width Dia
37X13.50R18LT 87 D 3,525 50 8.5-11.0 13.9 37
38x15.50R18LT 101 C 3,415 35 11.0-14.0 15.7 38
40X13.50R18LT 100 D 4,190 50 8.5-11.0 13.6 40

I would like to run the 38 but it seems to wide. Would the 40 work being as skinny as it is.

This truck doesnt get off-roaded extremely hard. So could 40s clear and just have slight rubbing issues when turning

 

don't run spacers. 37's-40's with spacers is just asking for disaster! i have broken spacers on my atv and they were high quality ones too, they can handle the stress of that much roational mass, it's a matter of time before some horrific happens....imagine......cruising down the interstate...cruise at 70...hit a pothole.....wheel just falls off....might now end so well. just buy new rims

 

Would the thirty seven fit without the wheel spacers? The thurty eights won't fit because of the width of the rim. Could u just do some cuttting on the fender wells to fit forty without the spacers or there a bigger lift kit for these trucks.


I can understand the spacer concern but I have had them on for three year with thirtyfives and pull trailers doing eighty on the highway and never had a problem. If it helps any the spacer have been upgrade to big studs to help cope with the weight and are not running factory studs.

 

Forgot this an 2001 f150 supercre with the 5.4. With a five leaf spring pack.

 

I've seen people run up to a 38x15.50 using a 10 inch wide wheel with 4.5 inches of bs with a 6 inch suspension and 3 inch body lift, but it's tight.