Tire PSI/load with camper
The tire pressure marked on the sidewall of the tire, is at max load. Using tire pressure charts, here is my figures. New truck has 235/80r17-E tires on the back. 4 of them. The weight on the ...
Forum Discussion
Four tires on the back of a '06 3500 SRW Dodge ?? You sure ? :)
Anyhow a couple of points.
One is with only 40 psi the bottom of the tires on a DRW truck can have too much bulge and run close together por even touching at times. You want to avoid doing so.
Another is using a minimum pressure chart with those low pressures can cause the lee side tires to over heat when running in strong side winds especially with a tall truck camper.
I would use at least 60 psi in the rear duals. More psi keeps the tire cool and less parasitic drag on the trucks engine.
As you travel you may want to keep a record of your tires PSI vs mpg at that psi.
When I hauled for a living I kept a mpg vs psi log on each truck. Showed best pressures for best mpg and best long term wear for the tires.
Anyhow a couple of points.
One is with only 40 psi the bottom of the tires on a DRW truck can have too much bulge and run close together por even touching at times. You want to avoid doing so.
Another is using a minimum pressure chart with those low pressures can cause the lee side tires to over heat when running in strong side winds especially with a tall truck camper.
I would use at least 60 psi in the rear duals. More psi keeps the tire cool and less parasitic drag on the trucks engine.
As you travel you may want to keep a record of your tires PSI vs mpg at that psi.
When I hauled for a living I kept a mpg vs psi log on each truck. Showed best pressures for best mpg and best long term wear for the tires.
