Re: Tire pressure for dually
I don't think being grossed out at 11,000lbs and running 35psi of air in the rear tires is a very safe combination at all. Sure it will ride smooth but it ain't gonna handle worth a darn. What about sidewall flex, rearend sway and heat buildup in the tires due to the low air pressure?
I'll throw my nickels worth in here. About 60% of the miles on my truck are loaded heavy pulling a trailer. 100% of the miles it is always carrying something of a load due to an aux fuel tank and fuel, two toolboxes, tools, spare parts, safety equipment and three different hitches. I carry about 1,000 to 1,200lbs of "stuff" in the bed 100% of the time. Plus in the cab of the truck a cooler full of drinks, extra drinks, some food,clothes and whatever I need to run while I'm gone for a week or so.
I run 75psi in the steers and 70psi in the drives....all the time empty or loaded. Yeah it does ride a little rougher on bad roads but I get better fuel mileage, handling and tire wear at these pressures. I pulled the last set of tires off when they had 93,000 miles on them and put 'em on another truck to finish them out.
Granted my situation is probably different than yours but I just can't see running 35psi in the rear tires anytime, even empty.
Using the "chalk method" is a good way to figure out how much pressure you need to get good wear.
"Early" '99, 4-98, F350 2WD CC DRW Lariat, Diablo tuner, Swamps 20* HPOP, 4" turbo back straight pipe & a 5" tip, S&B 12" open element air filter, CCV mod, EBV gutted, Vedder's built 4R100 with triple disk convertor, 6.0 trans cooler, Dfuser T/C lockup mod, DieselSite coolant filter, DieselSite TurboMaster, ITP reg fuel return, 4:10 gear w/lmtd slip,Centramatics, Western Diesel gauges, AIC, Ride Rite air bags & onboard compressor kit, Super-Vu convex mirrors, R.D.S. 91 gal. diamond plate aux fuel tank & toolbox combo, B&W gooseneck & 18K companion 5th wheel setup, Rhino lined, Drawtite 1,000lb leveler bars, Drawtite Activator II, Brown's Welding shop (New Braunfels,Tx)full grill/bumper/headlight guard, TurboNet V-Gate.
508,058 miles and still strokin'.
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