bowhunter8

Have 275/70/18 Ridge grapplers (e rated) on order! Want to see what psi you guys are running on your empty 2015+ f150s and how the ride is and how the tires are wearing?

Anonymous1

Nitto said 50 psi on an E rated 275/70/18

2slow05

I have the same size tires and I run 40 psi on them, they aren't to stiff, but there is a slight noticeable increase vs the stock tires.

SPOAT

My 4x4 guy recommends 50psi.

jpmcintosh

Mine are set to 44 PSI. 305/55/20. Amazing ride (quiet, smooth) for such an aggressive looking tire.

scott2683

That's the same size I want to go with. Are you lifted or leveled? Are you on stock wheels or aftermarket? Any rubbing issues? Notice any difference in gas mileage?

jpmcintosh

Leveled. Aftermarket Fuel Vapor 20"x9" wheels w 20mm offset. Nitto Ridge Grapplers, 305/55/20. Zero rubbing. I didn't have the OEM tires long enough to tell the mileage difference. Assume lower mpg, but I have no actual data. Getting 15.6 highway with the new tires/wheels. But that isn't adjusted for tire diameter.

boost74

I have mine set at 40 PSI. Smooth and quite ride.

bowhunter8

Where did you find this from Nitto?

Climb2Descend

I set mine (285/70/17) C Load to 42 psi after looking at the conversion charts.