Tire pressure for 255/75/r17?

[Mudwheelin]

Ok might sound like a dumb question but here it goes...Im running stock 17" tb rims. The tires Im putting on are 255/75/r17. Do I put the recomended psi in thats on the tire? Im just curious as thats not the correct tire for that rim.

[bgwolfpack]

The sticker on the drivers door will tell you the correct pressure for correct tires both front and rear of the truck. That being said, most of us run 35-50 pounds depending on our driving style and preference to feel in combination with the set up in the suspension parts but bare in mind that when off-roading your pressures will need to be dropped for good traction. There is a thread here that asked everyone what pressure they run…can't seem to find that thread. Mario will remember though.

Maybe we should list our tire pressures in our build threads...

[djthumper]

Ok might sound like a dumb question but here it goes...Im running stock 17" tb rims. The tires Im putting on are 255/75/r17. Do I put the recomended psi in thats on the tire? Im just curious as thats not the correct tire for that rim.

I generally start at the door placard for the tire pressure and adjust from there. Also bear in mind that the maximum pressure listed on the tire is maximum pressure when loaded.

What do you mean it is not the correct tire for the rim? The wheel meets the general requirements for that size tire.

[KE7WOX]

I would not run lower than the door sticker, and I won't go as low as the door sticker either. I'm running 45 psig right now (I think) on load range E tires, this is, however, much higher than the max pressure rating on my old Michelins (35 psig max).

And that tire size is well within the limits of the wheel, I don't remember if the max is 265 or 275 wide.

[Mudwheelin]

Ok might sound like a dumb question but here it goes...Im running stock 17" tb rims. The tires Im putting on are 255/75/r17. Do I put the recomended psi in thats on the tire? Im just curious as thats not the correct tire for that rim.

I generally start at the door placard for the tire pressure and adjust from there. Also bear in mind that the maximum pressure listed on the tire is maximum pressure when loaded.

What do you mean it is not the correct tire for the rim? The wheel meets the general requirements for that size tire.

The stock tire which is smaller (245/65/r17 ran at 35psi. Im assuming that a bigger tire needs more air...? And yes I know the tire meets the requirments for the rim, just wasnt sure if the pressure needs to be more or the same.

[janesy86]

Mud tires for the most part are a better ride at lower pressure. You may not get a good of mileage DD, but I like mine lower. I run mine at 35 psi max, usually 30-32ish. And most Jeeps run mud tires even less for DD.

Here there is a big variance here on psi, so I say whatever you feel is comfortable and make the tires wear evenly...

[MrSmithsTB]

3000!!!!

I have that size and have been running 35psi. They have been getting a little louder and have noticed a little bit of uneven wear starting. Planning to up the Psi to 40-45 to see if it helps, or at least makes them last long enough for some larger treadwrights. FYI, I am riding on BFG mud terrain km1

[bartonmd]

If you call BFG and tell them what tires you have, and what vehicle, they will calculate the proper PSI for even wear... On my 245/70-17 BFG AT, that pressure was 45PSI...

Mike

[Mudwheelin]

Awesome thanks guys! I will trying calling them to see what they say. I put the body lift on and it looks great. Pictures will be up tomorrow.

[Diacom]

I remember this being discussed on the OS, and that the BFG's like a little more pressure than what was typical for the size. The 265/70/17's i'm running sit at 40psi, though I air down to 15-25psi for offroad purposes.

[HARDTRAILZ]

I have always ran 25 to 35 psi w oversized tires. Tried higher and rode like shit. You should run a chalk test as well

[bartonmd]

I have always ran 25 to 35 psi w oversized tires. Tried higher and rode like shit. You should run a chalk test as well

It all depends on the type of tire (sidewall strength) and the width of the tire... Mine were somewhat comfortable at 37psi, but the sides were wearing FAST... At 45PSI, they're not nearly as comfortable, but they are wearing evenly...

On the other side of that coin, a much wider than stock 6-ply tire will take a pressure at or lower than stock to keep even wear...

Call the MFG and they will tell you...

Mike

[HARDTRAILZ]

I do typically run wide tires. At 32 my center are still wearing fastest.

[KE7WOX]

Im assuming that a bigger tire needs more air...? And yes I know the tire meets the requirments for the rim, just wasnt sure if the pressure needs to be more or the same.

Yes and no. Basically the same amount of air in a bigger tire will result in lower pressures, and the same pressure in a bigger tire means you need more air inside.

The maximum pressure is listed on the tire, and you shouldn't exceed it. Also note that they depend on the service description of the tire, so the Wrangler Silent Armor LT 265/70/17 C will have a different max pressure than the LT 265/70/17 E.

Be careful when running low pressures with a load, as you risk a blowout. Some people prefer to raise the pressure by 5-10 psi for highway use (assuming it's within the limits of the tie).

[Trail X]

Christian, I have those same tires (assuming they are the BFGs). I find they are very comfortable at 25-30 psi off road, and absorb the bumps very well at that pressure. I tried running them at 20 psi before, but I felt like I lost way too much height for my comfort.

Highway I find they wear well and aren't too rough at about 40 psi.

[Mudwheelin]

Christian, I have those same tires (assuming they are the BFGs). I find they are very comfortable at 25-30 psi off road, and absorb the bumps very well at that pressure. I tried running them at 20 psi before, but I felt like I lost way too much height for my comfort.

Highway I find they wear well and aren't too rough at about 40 psi.

Awesome, thank you very much for the info. I will run them at 40psi. In my build thread I will put the psi beside the tire size so any one else can find it.

[BSalty]

I have the same size in BFG, I have been running them at 35-36 psi. 10k miles and they are still wearing evenly, but I have added weight in the back as well. When I do air down I take them to around 28-30 psi avg. and they seem to grip pretty well.

[Mudwheelin]

Ive gotten it figured out since september but thanks:) im currently running 42 psi and they seem to be doing great.

[BSalty]

Sorry, didn't even think to look at the date.

[DirtyBacon04]

Is this a real thread?