tinner12002 wrote:
Check your door it has recommended pressures to run. Personally I run 70 in fronts and 65 in duals even when towing.
Use the door panel sticker to......I dunno. That's a generic recommendation for the OE tires the truck rolled off the line with.
If you're lost on what pressure to run (which you are if you're running 70-75 psi rear duals pulling a smallish trailer around) then use some weight/inflation tables.
You'll see the trend, more psi for more weight and vice versa.
Note this isn't gospel either. Millions of vehicles running around without ideal tire pressure and they're not really worse for the wear. Even mfgs spec pressures far to high for the vehicles and get away with it.
I prefer to adjust tire pressure to the load or road conditions. (Within reason)