Tire Pressure Question???

[Ziess]

What pressure should I be running in my new BFG 315 All-Terrains? I won't be towing and mostly driving on the highway and around town....any suggestions?
Thanks

[RightWingNutJob]

From your signature I'm assuming you're not a dooley. I still have stock 265 SteelTex ATs on truck and usually
run 45 front/ 50 rears when running around empty. Seems to be a reasonable compromise on handling vs.
comfort. I've gone lower on front and noticed bump steer that made truck hard to control. Fully loaded I've
aired the rears up to 80 PSI, front to 60; runs great with 3000 lbs + in bed. Just don't forget to reduce the
pressure afterwards or you'll shake the fillings outta your teeth. I haven't towed very heavy so 45/55 seemed
to work okay for me. I'm kinda guessing, but the bigger tire may need a little higher pressure than stock.

[Shaffer]

RightWingNutJob (cool name)-for the most part I agree with you, but I think a bigger tire carrying the same load would want a lower tire pressure. The idea of having a bigger tire is to allow you to have a bigger contact patch. If you keep the same pressure with a bigger tire, you can change the shape of the contact patch (also a good thing), but the size will remain constant.

This link has a pretty good in-depth explanation. Just scroll down to the part titled "tires." I know it's about another type of vehicle, but the same principles apply

[V10man]

Ziess,
I have the same tires and I run 50 psi all around with my set-up. It gets the best mileage and the ride is still fine.

[reveye]

Had to run 35psi all the way around on my Pro-Comps. The ride was way too stiff at 50.

Rev