Tire pressures
Question:
Replying to my own posting because I now have more info: I called the Chevy/GMC owner assistance line. I was told that with a very lightly loaded truck, 40 psi all around will give the most comfortable ride, and that is why the dealer set up the new vehicle’s tire pressures that way. 50 psi all around will give the best tire wear and performance but a somewhat harsher ride. With a major load, F/R 50/80 should be used, as is posted on the door plate. Interesting that there is no hint of this advice in the Owner’s Guide. -Larry Naples, NY
Response:
I just took delivery of a GMC Sierra 2500 extended cab, 4wd, short box. The dealer had prep’d the vehicle. The tires were all at 40 psi. The door sticker says that the tires should be at F/R: 50/80. My normal use of this truck will be to run local errands, only occasionally putting a significant load in the bed, and occasionally towing a bumper-pull horse trailer. At 40 psi, the truck steers and handles wonderfully well (vastly better than the Ford Expedition I had until recently). The tires do not look underinflated. Should I leave the pressures at 40 psi until there is more load in the bed or on the hitch? -Larry Naples, NY
Response:
I had the same question when I got my 2000 K2500 Silverado. I run mine at 41 all around and life has been good at all speeds up to 80mph. If you’re going to tow, though, I’d recommend raising the rears to 50-55psi. No warranty expressed or implied by this posting. Use this information at your own risk. Reader accepts all responsibility for use of this information.
– Hide quoted text — Show quoted text -> I just took delivery of a GMC Sierra 2500 extended cab, 4wd, short box. The > dealer had prep’d the vehicle. The tires were all at 40 psi. The door > sticker says that the tires should be at F/R: 50/80. > My normal use of this truck will be to run local errands, only occasionally > putting a significant load in the bed, and occasionally towing a bumper-pull > horse trailer. > At 40 psi, the truck steers and handles wonderfully well (vastly better than > the Ford Expedition I had until recently). The tires do not look > underinflated. Should I leave the pressures at 40 psi until there is more > load in the bed or on the hitch? > -Larry > Naples, NY
