Lowering TV tire pressures
For those of you with diesel HD trucks that lower their tire pressures when not towing, what do you set them to? My Ram calls for 60psi front and 80 in the rear. As most know, this gives a pretty h...
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With our Ram 3500 SRW empty, only about 80% of the tread contacts the pavement with 80 psi in the rear tires. Easy to see the contact pattern driving on pavement after driving on a dusty, dirt road. Gonna have a rough time convincing me I'm getting even tire wear and/or maximum traction with only 80% of the tread in contact with the pavement with 80 in the rear tires (empty). We typically drop the rear tires down to 35-40 psi to get 100% tread contact and a softer ride with the truck empty. Been doing this for 50k miles and get consistently even wear (within 1/32nd in. across the entire width of the tires).
As for the front tires, OEM recommendation is 60 psi (Cummins). On our truck 65 psi results in the most even wear on the front. On those occasions we get excess wear on the outside edges of the tire, we may run 70 psi for a few thousand miles to even things out.
As for the front tires, OEM recommendation is 60 psi (Cummins). On our truck 65 psi results in the most even wear on the front. On those occasions we get excess wear on the outside edges of the tire, we may run 70 psi for a few thousand miles to even things out.
