Tire PSI

I have BFG All Terrrains on my truck and wanted to know if anyone knows whats the best PSI to keep them at for Gas Mileage and even tread wear? There 285/70/17

 

chaulk test. Draw a line across them and drive for 100 yards. Adjust air pressure according to where the chalk was worn/fresh

 

I keep my tires pressure at 32.

 

What size wheels are you running & what size are the tires?

Tire & Wheel size will make a difference in PSI and tread pattern.

So asking 'everyone' isn't necessarily the best idea unless they have the exact size wheels & exact size tires.

Go ahead and do some experimenting yourself by using the CHALK test.

 

ya ya pick on the engineer who can't spell

 

I use a whiteout and/or a Paint marker. I make lines across the whole tire and then drive it around the neighborhood. That will give you a good idea how it's wearing. I'm on stock wheels and tires (TRD-OR) and I have my fronts at 35psi, and the rear at 30. (cold pressures). Generally the larger the tire the less pressure you'll need. Wheel width/tire width is a huge factor. They sould be pretty close. I never fell for that 35x12.50R15's on a 8" wide wheel. I ran 35x12.50's on a 10" wheel.

 

I don't think any engineer can spell. Neither I or any of my fellow engineers I work with can spell.....

 

I'm getting better at spelling now that I'm an engineering manager. During the lobotomy they injected a spelling dopamine and it seems to be working...

 

Honestly, I didn't see your misspelling. I read it quick and didn't even notice. My 'caps' wasn't there to poke fun at you, it was just to emphasize the word chalk. Believe me, I'm the one that can't spell. My husband is always correcting me!! (it's annoying)

DrRabbitFurhead, I need some of that!!