What Tire Pressures Does Everyone Run?

[Tanner6325]

Hey everyone,
I've got an 06 Yukon on 265/70R17 all terrain tires (Hankook Dynapro.) The door says to fill these tires to 32psi. I have always filled the tires to around 34psi and when they fell down to 32/31 filled back up to 34. I have done this for about 21,000 miles now.

I recently filled my tires up to 34 cold on a cold day and when it was hot the next day they were around 36/37 in the morning cold. I would usually let the air out immediately but I was feeling a bit lazy so took a trip with them.

1) They stick to the road better in the rain and when it's dry. I can take curves 5-10mph faster with the same level of confidence as the day before.
2) They cut right through 3inch deep puddles on the road with minimal steering shift.
3) My vehicle does not downshift as often when going up moderate hills.

So i'm feeling like I'm driving a sports car now at 5 or so psi above what my door says. Has anyone else ran tires this high over their door rating before for a significant number of miles (20k+)? How is your treadwear?

Looking at my tires it seems like the middle has slightly more tread than the outer sides after the 21k miles I have put on them. I'm not sure if it is the increased tire pressure raising the middle of the tire or a slightly inefficient wear.

Thanks for any input.

 

[Tonyrodz]

When tire pressure is too low--underinflated-- it wears out the outer edges of the tires, because it's more "flatter". When they're over inflated, the center tends to wear out more then the outer edges.

 

[swathdiver]

Hey everyone,
I've got an 06 Yukon on 265/70R17 all terrain tires (Hankook Dynapro.) The door says to fill these tires to 32psi.

Are these P-Metric tires or LT Tires?

My truck has the same tire size and the door sticker says to run a P-Metric tire at 30 psi. However, it is shod with LT tires in the same size and they have to be run with considerably more air and run them at 49-50 psi cold.

We went off-road today and the sidewalls dug into the mud and got us out of a couple sticky spots and had it not been for 4LO, probably still be in it out in the middle of nowhere.

 

[Tanner6325]

Are these P-Metric tires or LT Tires?

My truck has the same tire size and the door sticker says to run a P-Metric tire at 30 psi. However, it is shod with LT tires in the same size and they have to be run with considerably more air and run them at 49-50 psi cold.

We went off-road today and the sidewalls dug into the mud and got us out of a couple sticky spots and had it not been for 4LO, probably still be in it out in the middle of nowhere.

I don't buy p metric tires, so LT. The door doesn't specify which classification but I would assume LT since it is the 4wd model. (I think it's the gmc equivalent of a z71.)

Anyways today they were filled to 34 cold in the morning but the temp went up 20 degrees and when combined with driving they got up to 40psi. Felt great at speeds just hoping it's going to optimize treadwear still.

 

[swathdiver]

I don't buy p metric tires, so LT. The door doesn't specify which classification but I would assume LT since it is the 4wd model. (I think it's the gmc equivalent of a z71.)

Anyways today they were filled to 34 cold in the morning but the temp went up 20 degrees and when combined with driving they got up to 40psi. Felt great at speeds just hoping it's going to optimize treadwear still.

No way Tanner. The door means P-Metric. 34 PSI on an LT Tire does not support the weight of the vehicle. At 34 PSI the tire can support about 1855 pounds per wheel. That will just cover the front axle but not the rear. Your door sticker, "Tire and Loading Information" and RPO Sheet do specify which kind of tire your vehicle was originally equipped with.

Some 2500s came with LT tires in our size. Their stickers called for 50 PSI up front and 60 PSI for the rears. Their rear axles handle 5500 pounds.

My own LT tires are Load Range C and have a maximum capacity of 50 psi, which the manufacturer recommends. No, they insisted on it! Being hard-headed I fooled around with the lower pressures and by the time I wised up had cut the life of the tires in half.

Air them babies up!

 

[Doubeleive]

I run 42 psi, I think it says 45psi max on the sidewall goodyear eagle ls2 20", I don't notice any difference at any psi unless it's down to about 20-25 but that never happens anymore thanks to tpms

 

[Erickk120]

I run around 36 PSI mine are Michelin defenders LTX's max is 44 for my specific ones

 

[adventurenali92]

Yeah 34 psi is way low for these size trucks. When I had the 265/70s on my stock 17 inch wheels, I ran them about 45 psi. Now I’m rolling on 20 inch wheels with 275/60/R20 nitros, and I run them at 50 psi. All 4 tires have worn exactly the same so far and all have worn very evenly.

 

[Tonyrodz]

I run 36 lbs in my 17's and 22's.

 

[fiatdale]

35-37 in my 22s. 40 in my 37's.