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Tire Pressure


07Serria

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Hi all,

 

I got a new 2015 2500hd. The truck is my daily driver, I don't haul or tow anything. The required tire pressure to keep the sensor off is ridiculous, if you are not hauling or towing. I have been running around 60psi all the way around and so far this keeps the sensor light off. However, I would still like to run less in the rear tires, to avoid wearing out the center of them. My question is what are you guys running for tire pressure? Have you had problems with the center of the rear tires wearing out from running higher pressures? Have any of you been able to get you trucks reprogrammed to lower pressure numbers?

 

Thanks

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  • 2 weeks later...

They are load range E tires if you run them any lower you will wear the outside edges (under-inflation)of the tire.those tires are built to run at 70 to 80 psi because of the 10ply construction, if you are trying to soften the ride since you said you don't haul or tow anything, you may need a 1/2 ton verses a 3/4 truck if this is the issue?

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Factory recommended pressures are 60 front 75 rear. 5 psi deviation should be no problem. Since they are the same tire front and rear, 55 should be acceptable all around when not towing/hauling.

 

 

Sent from my iPhone using Tapatalk

 

 

I agree. 55 was what I ran in my 1999 1/2 2500 with LR E for 200,000 miles. 80 was for when I towed a horse trailer.

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The TPMS is set to look for a 'magic number' of PSI, and will allow for a certain variance (I'm not sure exactly how much) either way before it trips the light. On my dad's 2500HD (gas engine), he had the number for all four tires set to 60 PSI, I believe. That way, he can run 50-55 when empty, and bump up to 70 when towing. You don't need to run 70-80 PSI when empty. That being said, the diesels need a little more PSI in the fronts than the gassers do, because the engine is much heavier.

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Factory recommended pressures are 60 front 75 rear.

I run less in the rear than I do in the front unless I have a load. Don't follow higher pressure in the rear. I've always ran 10 ply tires that call for 80 psi at max load. Under normal daily commutes I run 55-57 front and 46-50 rear (1/2 Ton) and tires have always had even wear across the tread. I also think depending on tire width and wheel width combination pressures could differ. This may not address the sensor question but may help with pressure question.

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  • 4 months later...

The factory tire pressure recommendation is base on the maximum GVWR of the pickup. NOT on what loads the tire is actually running. Case in point... for commercial truck tires, the tire OEM will have load / pressure charts that give the proper tire pressure to run on a tire based on the load on them. Max load, pressures higher. Lighter loads, reduced pressure.

 

A tire has to do more than just turn. It has to provide effective braking, absorb road shock, etc. If it is over inflated, based on the load on them, they will not stop the vehicle as effectively and since they are stiffer due to higher pressure and light load, they will not absorb road shocks properly and transmit that to the axles and suspension components, wearing them down faster.

 

Unfortunately, the pickup OEM didn't give us the proper load tables, nor are they readily available from the tire OEM's for light truck tires. But sure thing, the factory pressure recommendations for LT tires on something like a 3/4 ton is way out of line if running empty or very light.

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