what is the correct tire pressure for a 2002 chavy duramax diesel2500. the tires say 80psi cold. checked the owners manual and it doesn't have anything on the correct pressure. when i checked all four tires today[ 3000 miles on all four, just put on this past july] the front has 50 lbs, and the rear have 65lbs.
not pulling anything and the weather is colder now than last july. when i look at the tires they just seem low to me.
Posted 2009-11-23 9:24 PM (#113549 - in reply to #113543) Subject: RE: correct tire pressure for truck.
Extreme Veteran
Posts: 406 Location: Minneapolis, MN
When I not dragging the GH trailer around, I run, on the 2001 Ford diesel, 65psi front, 50 rear. In fact I always run the fronts at 65 psi, I vary the rears depending on load.
Posted 2009-11-23 10:25 PM (#113555 - in reply to #113549) Subject: RE: correct tire pressure for truck.
Veteran
Posts: 201 Location: Lincoln, NE
Why the difference between front and back? How does this affect how the truck handles? Someone told me psi should be at maximum when hauling the gooseneck. I leave the tires at 65 psi (maximum). The ride is somewhat choppy if the gooseneck is not hooked up. But I have a car for going places without the trailer so it's not a big issue.
Posted 2009-11-23 11:07 PM (#113557 - in reply to #113543) Subject: RE: correct tire pressure for truck.
Expert
Posts: 5870 Location: western PA
When I'm hauling, I run my tires at the max recommended pressure (80 psi) as stated by the TIRE manufacturer. This results in the highest load rating and coolest running.
Some duallys state a lower rear tire pressure when the tires are used in pairs.
Posted 2009-11-24 1:24 AM (#113559 - in reply to #113543) Subject: RE: correct tire pressure for truck.
Extreme Veteran
Posts: 304
I run 80 psig in rears to carry the load, but if I run more than 60 psig in front the truck drives like a boat wandering all over the place. Plate on drivers side door says 65 front 80 rear. 97 Ford F350 Crew Cab Long Bed 7.3l PSD
Posted 2009-11-24 6:41 AM (#113560 - in reply to #113543) Subject: RE: correct tire pressure for truck.
Regular
Posts: 56
thanks for the input. i did check the label on the inside of the door and it says 55 on one line and 80 on the next two. i understand that the 80 psi is the max load. i checked the tires when they were hot, ran about 30 minutes, will check today before i go anywhere. they just seem a little low to me.
Posted 2009-11-24 9:10 AM (#113565 - in reply to #113560) Subject: RE: correct tire pressure for truck.
Expert
Posts: 5870 Location: western PA
Originally written by okie ann on 2009-11-24 7:41 AM
thanks for the input. i did check the label on the inside of the door and it says 55 on one line and 80 on the next two. i understand that the 80 psi is the max load. i checked the tires when they were hot, ran about 30 minutes, will check today before i go anywhere. they just seem a little low to me.
okie ann
The tire pressures should be checked when the tires are "cold" and at the ambient temperature. As they are used, the heat will increase the air pressure. This should not be reduced to reflect the original pressure.
Posted 2009-11-24 11:46 AM (#113579 - in reply to #113543) Subject: RE: correct tire pressure for truck.
Veteran
Posts: 229
okie ann, I have the 2001 version of your truck and pull mainly a variety of GN trailers I do like some of the other posters say. I don't change my fronts much at all. Loaded, I run around 60. Unloaded I run around 50. Even with the GN's most of the pin weight will be taken on the rears, hence the big change in tire presssure from loaded to unloaded. Loaded I run around 75. If you run this high a rear pressure empty, the truck (even a Chevy!) will beat you to death on a rough highway. Unloaded, I run around 50 on the rears. When towing, like some of these other posters, I alway run more in the rears than the front.
correct tire pressure for truck.
