Tire Psi

[KMT15]

I noticed the door says 50psi all around. Tire barn put 35 in all mine. Is 50 ok? seems high. Tires are 285 if it matters

[Forsaken_id]

It should say on the tire sidewall. 50psi is usually for hauling/towing and 35 for regular driving.

[Crazy Canuck]

Go with what is says on the door. That is what GM recommends for best all around performance. The tire will indicate the maximum allowable cold pressure which is usually higher than the door sticker. 50 doesn't sound all that high to me. My little bro has an older 2500 and it recommends 50 front, 65 rear and I beleive the max tire pressure is 80. Hope this helps.

 

Crazy

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Go with what is says on the door. That is what GM recommends for best all around performance. The tire will indicate the maximum allowable cold pressure which is usually higher than the door sticker. 50 doesn't sound all that high to me. My little bro has an older 2500 and it recommends 50 front, 65 rear and I beleive the max tire pressure is 80. Hope this helps.

 

Crazy

We used 55 front and 65 rear on gm passenger vans.

[Nick The Great]

It should say on the tire sidewall. 50psi is usually for hauling/towing and 35 for regular driving.

 

That's what I try to go by for a "rule of thumb." If it's wearing in the middle deflat, wearing on the outsides, inflate.

 

50 psi seems too high for every day driving, unless you like pretending you're on the Oregon Trail.

[dlstewart01]

That's what I try to go by for a "rule of thumb." .

 

 

 

Back in old England, they had a law that said you could beat your wife with a stick no bigger than your thumb or Rule of Thumb

 

Merry Christmas,

 

Don

[Crazy Canuck]

I'm assuming he is talking about his 3500 though. Heavier Vehicle = More Pressure. Any mechanic I have ever spoken to has said go by the door sticker. If you underinflate by 15 psi, you'll have a lot of unneccesary wear, sloppy handling, and possibly a blowout doen the road.

[Zembonez]

I run 33 psi in mine all the way around now. Any less sets off the TPMS. I don't care what it does to the tread wear. It makes a nice balance of ride and handling.

[StoneCutter]

50 eh? I don't think I've ever had a tire that I put 50 psi in... Seems nuts to me. 35 is where it's at for me. Even the Onstar report "recommends" 35 psi.

 

But that's just me.

[Outbacker]

My door frame shows 35 psi, and that is what I go by. It is the recommended pressure for the tires (sizes are also on the decal) for the truck. The only time I increase the rear tire pressure is when I am towing, and then it gets bumped up to about 39 psi.

[BuckFeverZ]

Another vote for 35 psi.

 

My TPMS on goes off if the psi gets below 30

[CapitalTruck]

Folks, this guy is talking about a 3500. The inflation for that is going to be higher pressure than a 1/2 ton. Different vehicle setup entirely.

[bax467]

what guy above me said. 2500's/3500's have far greater load carrying cappacity and therefore use different tires. what is the load rating on the tires? are they lighter than the tires that came stock on the truck? often times a 3500 will run more that 50 psi....

[pm26]

I run 33 psi in mine all the way around now. Any less sets off the TPMS. I don't care what it does to the tread wear. It makes a nice balance of ride and handling.

 

Mine does not have the TPMS, but 35 psi is the maximum pressure at which the ride is not too jarring. This truck has P series tires.

 

However, in the previous example, they were talking about LT tires with 8 ply construction, taller aspect ratio, and much higher load rating, which are totally different tires and carry much higher recommended pressures.

[Zembonez]

I run 33 psi in mine all the way around now. Any less sets off the TPMS. I don't care what it does to the tread wear. It makes a nice balance of ride and handling.

 

Mine does not have the TPMS, but 35 psi is the maximum pressure at which the ride is not too jarring. This truck has P series tires.

 

However, in the previous example, they were talking about LT tires with 8 ply construction, taller aspect ratio, and much higher load rating, which are totally different tires and carry much higher recommended pressures.

 

I understand that. I've never run more than 35 PSI in anything... Even E rates 5 ply BFG All Terrains got 28 psi rear - 32 psi front and I put hundreds of thousands of miles on them.

 

Obviously you'd want more pressure than that if you were using the truck to haul weight or tow. I usually ran about 36-40 psi in the rears when towing or hauling.

 

Never had a problem with wear.