Tire pressure
- Thread starter bangon
- Start date
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80 psi is the max the tire will take. If you run them at 40 psi, you should be fine.
Thank you. That's kind of what I thought.
intheburbs
Full Access Member
I would start at the recommended pressure on the sticker in the driver's door jam. Not the max pressure on the GVWR sticker.
Tweak from there as desired for optimal ride and handling.
swathdiver
Full Access Member
We have run that very tire on our trucks between 42-45 psi depending on tire wear. BFGoodrich's website may still provide recommended air pressures when switching from P-Metric to LT tires. Back in 2017 they recommended 50 psi and then dropped it around the same time I saw the center of my tread wearing faster then the outside.
Charlie207
Full Access Member
This document has some charts to help guide your pressure decision. 40psi seems reasonable, and that's what I run on my non-OEM sized summer tires.
Marky Dissod
Full Access Member
For max comfort, especially with very light or no weight loading and lazy driving, you can go as low as 30psi.
Although I'll never go under 36psi myself unless I happen to be trying to get unstuck.
The harder the vehicle / tire is working / playing, the more psi the tire needs to protect everything, including itself.
For example, autocross / drift driving typically starts at 44psi.
Although I'll never go under 36psi myself unless I happen to be trying to get unstuck.
The harder the vehicle / tire is working / playing, the more psi the tire needs to protect everything, including itself.
For example, autocross / drift driving typically starts at 44psi.
Be mindful of the lower pressures if you choose to use them; the TPMS settings might trigger a warning for low air pressure.
depends on what you want from them. towing you need to air them up based on tongue weight but don't go over max.
softest ride, on the low side of the factory recommended, like. 30iish.
Longevity run a pressure there they wear even. to high wears middle, to low wears the outside.
I think the recommendations above of 40ish is a good starting place.
I alway lean towards softer since I like a smoother ride and less rattles in my old age haha.
softest ride, on the low side of the factory recommended, like. 30iish.
Longevity run a pressure there they wear even. to high wears middle, to low wears the outside.
I think the recommendations above of 40ish is a good starting place.
I alway lean towards softer since I like a smoother ride and less rattles in my old age haha.
swathdiver
Full Access Member
This is the chart for my pickup truck. It's rear axle rating is 4000 pounds. As you can see, 42 psi gave it a nice cushion and the tire wore well on both of my trucks. Your axle rating is 4,200 pounds and your back half is heavier than a pickup so you'll want a little more air. BFG's website recommended 47 psi for my CC Sierra and 42 psi for my Yukon XL.
Start anywhere in that range and then measure the tread depth on the inside, middle and outside tread with each tire rotation to see how the tires are reacting to the air pressure you've chosen. If they begin to wear down on the outside edges, you need more air. If they begin to wear down in the center, you have too much air in them.
