Do you keep your tires at full capacity? 80psi

[Big Whiskey]

18 hours ago, rongotti said:

I would drop by Discount tire, they are usually awesome about stuff like this, and they want your future tire business, so most of the small stuff they do free of charge.

Thanks for the advice. It seems like nothing is free any more, but it's worth a try. The nearest Discount Tire is about an hour away from me, but it will be pretty easy for me to stop by the next time I'm in that area. It would be nice to get the TPMS re-programmed.  

[rongotti]

Thanks for the advice. It seems like nothing is free any more, but it's worth a try. The nearest Discount Tire is about an hour away from me, but it will be pretty easy for me to stop by the next time I'm in that area. It would be nice to get the TPMS re-programmed.  

Give them a call first maybe to be sure. I usually buy Cadillacs or other luxury brands where all the maintenance is included, but my last Denali (it was a 15 I think) I would take there because the rotations were free. I couldn't believe they didn't charge for it, but it worked, I have bought 3 sets of tires through them. 

Still shocked that an $80K Denali doesn't come with Cadillac like service inclusion.

 

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[Dunn]

I dropped mine down to 50 psi on all 4 corners and no warning lights.....while its still a big truck and stiff overall the air pressure does help a lot with the ride, I was thinking of going with some bilsteins or eibachs but don't know if that will help the ride much.....probably throw 500lbs over the rear axles for DD, and yank them when I need full capacity.....I actually do like the fact these trucks don't body roll like 1500s.....

[redwngr]

On 5/9/2020 at 3:36 PM, Dunn said:

I dropped mine down to 50 psi on all 4 corners and no warning lights.....while its still a big truck and stiff overall the air pressure does help a lot with the ride, I was thinking of going with some bilsteins or eibachs but don't know if that will help the ride much.....probably throw 500lbs over the rear axles for DD, and yank them when I need full capacity.....I actually do like the fact these trucks don't body roll like 1500s.....

Reduced body roll and reduced frame flex are included in the reasons I went back to a 2500. 

 

When running unloaded (which is most of the time) I also run cold pressures in the 50 - 55 range, depending on my mood. 

 

(it has the optional 18's, instead of the standard 20's, door sticker is 60F/70R)

[Dunn]

mine is same with 18s and tire pressure sticker.....I wanted the 18s ( more sidewall and not digging chevys 20'' rims) and really like the stock rims so that's a bonus.....coilover conversion at some point

[indignantfaller]

 I really do not understand this. It's everyone's preference to run such low pressure but I am the opposite. I have a 2023 silverado HD and the ride is such that I would prefer MORE tire pressure for more road feeling. I'm currently at 72psi rears & 61psi steers.

Has anyone ever ridden in or driven a road tractor, loaded or unloaded? THAT'S what a rough ride feels like; these trucks are like cadillacs. I don't need a cadillac 3/4 ton truck, I need a 3/4 ton truck! Probably sounds insane but it's the case.

[MG386]

2024 Sierra 3500 AT4.  I run 70psi front, 80psi rear on larger 295/65R20.  I tow 1-2 times a week 9klbs/1k tongue.  it's a little rough empty, but I like having way more capacity than required and a little better mpg.  got tired of airing up and down multiple times a week, so I just leave them there now.

[Chuck FB]

On 7/6/2026 at 9:05 PM, MG386 said:

2024 Sierra 3500 AT4.  I run 70psi front, 80psi rear on larger 295/65R20.  I tow 1-2 times a week 9klbs/1k tongue.  it's a little rough empty, but I like having way more capacity than required and a little better mpg.  got tired of airing up and down multiple times a week, so I just leave them there now.

 

Are you using a weight distribution hitch system with your trailer as that alone can change the actual tire pressure requirements needed. It would prove interesting to see what the actual individual axle weights are on your truck when you are hooked up to the trailer. In fact when your hooked to the trailer, typically if anything unless it has a large capacity weight distribution system that is over cranked, often the weight on the front axle will be less when hooked up vs driving empty and certainly if one doesn't have a weight distribution hitch. Really the only times one may get up there with weight on the steer axle is if there was a snow plow mounted on the front or a motorcycle on a rack or with a very large jockey tank full of fuel at the front of the box that transfers a bit of its weight to the front axle. 

 

And of course your tires carry more weight for a given tire pressure due to their size vs a stock sized tire so there is that to take into the equation as well. 

Edited 1 hour ago by Chuck FB