want better mpg, check your tire pressure!

[Swank Force One]

We didnt buy a Montero for the gas mileage, feels better at 48-50psi. Ride isnt brutal. Not sure what to tell you.

10-15k miles on these tires, they're wearing well.

 

[JohnnyBfromPeoria]

I run my BFG MT KM-2's in both 33x12.5/15 and the same profile in 35" at 35 lbs (the max for that size) on the road. There's plenty of flex left in them to make highway driving acceptable without the sidewall folding like dough in corners. You can hear and feel the stiffness through the chassis while driving the super slab, though. And they wear acceptably. Air 'em down to 15 for off-road rock n roll, though.

John B.

 

[4D55 Performance]

I filled up the tires on my Trooper to 29 PSI the other day and it got me thinking. No wonder my truck rides like a dump truck the tires are set to 80 psi from the factory and if you lower the damn psi you get a flashing light on the dash.

 

[toyotech]

Tires have weight ratings. Weight rating depends on tire pressure. Most say 50psi max which Means you need it at 50psi if you need the tire to handle its maximum weight rating.


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[Schitzangiggles]

If it makes anyone feel better I run @95psi in my F250...
But I am running a 16 ply tire rated at 5500 pounds of load capacity PER tire or 11,000 lbs per axle.

The only real way to know if you have the right pressure for the load you are carrying is the chalk test. I have a chart I made up for each vehicle that has the PSI for the specific load and tire.

If you do want craptastic MPG look at running the narrowest tire you can as it offers less width to impart resistance as you drive down the road. Wide tires suck on packed snow, ice and sand. A talk skinny tire that is aired to the load and road/off road conditions will generally take you place an overly wide tire won't.

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[montypower]

Instead of debating... try it for yourself. I didn't think going from 35psi to 40psi would make a difference. But it does. Tire wear is fine. Make sure your tires can handle the pressure. Mine are rated at 60psi max.

Ride quality is subjective. I can't stand worn out or cheap suspension most trucks roll with. I can say my truck is more plush than harsh.

 

[brad2274]

do you guys recommend a square setup? factory says 35 rears 26 fronts, (currently the rears are 30 as i was trying to get out of mud)

would 35psi all around would help mpg? visibly the fronts are squished a bit more than rear, so i question the factory specs

 

[JohnnyBfromPeoria]

(currently the rears are 30 as i was trying to get out of mud)

Try about 15 psi for that.

John B.

 

[jeep-N-montero]

This is your pre-winter reminder to check your tire pressure for better winter traction and mpg!

 

[JohnnyBfromPeoria]

Good reminder. Colder temperatures mean lower cold tire pressure. Want a neat debate topic around the campfire? Introduce the effects of altitude on tire pressure and see your friends take sides!

John B.

 

[miloe79]

I keep my 33" BFGs on 40psi,
Anything above 40 psi just makes the ride a lot stiffer,
40psi is what works best for me here in the hot Las Vegas desert.


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