AT psi

[Joshuasvt]

Switched from factory 16 to a BFGoodrich All Terrain KO2 LT265/70R17 6 ply. What should my PSI be set at for good MPG?
Daily commute is 25 miles highway stop and go driving.

 

[gat0r]

https://www.tahoeyukonforum.com/threads/tire-pressure-for-24-wheels.24883/page-2#post-1118565

i use playing card method to sort out what worked best for my tires

 

[swathdiver]

Switched from factory 16 to a BFGoodrich All Terrain KO2 LT265/70R17 6 ply. What should my PSI be set at for good MPG?
Daily commute is 25 miles highway stop and go driving.

View attachment 241972

You'll want to run them at least 40-42 psi and not really past 45-47 psi. They wore quickly while I had them in the 30s and low 40s. BFG told me back in 2017 to run them at 50. I finally listened and the tire wear all but stopped. After 35K miles the center of the tread was down a 1/32 over the outside, a little too much air. Then BFG said in 2019 saying to run them at 42 psi.

42 psi is what I originally calculated for the tire to exceed the rear axle capacity. Technically it's 41 but 42 gives the same margin GM uses. I now run mine at 47 but you might try a 2-4 pounds less since your rig is lighter than mine.

Cute kids, now were y'all playin in the mud or was a typical day in a yankee winter?

 

[GreyStone]

Switched from factory 16 to a BFGoodrich All Terrain KO2 LT265/70R17 6 ply. What should my PSI be set at for good MPG?
Daily commute is 25 miles highway stop and go driving.

View attachment 241972

I would not stray very far from the recommended pressure on the sticker inside of your drivers door edge. BFG's are hard riding tires because of the exceptional stiffness of their sidewalls.

 

[swathdiver]

I would not stray very far from the recommended pressure on the sticker inside of your drivers door edge. BFG's are hard riding tires because of the exceptional stiffness of their sidewalls.

Door sticker is for P-Metric tire, different animal. The Load Range C tire that OP has a smoother ride than an E tire.

 

[Joshuasvt]

You'll want to run them at least 40-42 psi and not really past 45-47 psi. They wore quickly while I had them in the 30s and low 40s. BFG told me back in 2017 to run them at 50. I finally listened and the tire wear all but stopped. After 35K miles the center of the tread was down a 1/32 over the outside, a little too much air. Then BFG said in 2019 saying to run them at 42 psi.

42 psi is what I originally calculated for the tire to exceed the rear axle capacity. Technically it's 41 but 42 gives the same margin GM uses. I now run mine at 47 but you might try a 2-4 pounds less since your rig is lighter than mine.

Cute kids, now were y'all playin in the mud or was a typical day in a yankee winter?

Thanks for the info! I had a feeling they were running low. I’ll bump them up some.

The pic was taken in late Jan. this year. Took them out on an old logging road. We found a place to go shooting and played a bit in the mud. Not sure about Yankees. I grew up in Texas, and let me tell you there’s more rednecks up here in Wa State than I ever saw in Texas

 

[Joshuasvt]

Tire pressure seems to be the culprit here. 36psi vs 42psi. I’m seeing better fuel economy with 42.

 

[Joshuasvt]

Pics loaded sideways lol
36psi I was getting 302 miles a tank since October of last year.

Bumped it up to 42psi a week ago and ran almost an entire tank of gas before refilling. Now I’m seeing the normal range of 360-380 per tank

 

[Danny3737]

Higher pressure =
Better MPG
Longer stopping distances
More likely to hydroplane
Worse in snow
Sometimes quieter
Better drifting

 

[Joshuasvt]

Higher pressure =
...
Better drifting

Better drifting, worse mpg