Tire Pressures for Dually and Heavy T/C
I am getting new tires, BF Goodrich Michelin 225/70 R19.5, load range G, max pressure 110 psi. In the past I have run similar tires with air pressure on the front tires at 95 psi and 105 psi in the du...
Forum Discussion
gvgeode wrote:
I have a similar truck, 2010 F450 with the stock tires 225/70R19.5G. Door sticker says 85 front and 75 rear. Fully loaded (15,000 lbs) my front tires carry 2950 pounds each. Tire mfgr data sheet says 75 psi will carry that weight. Rear tires carry 2280 each and data sheet doesn't go that low. I run at 90 front and 85 rear which gives me a comfortable ride and a margin of about 20-30% below the weight capacity of the tires.
What he said. First, get axle weights when you're loaded up and ready to go (water, fuel, wife, kids - everything). Then, check the tire manufacturer's data sheet for your tires. At each pressure interval (usually every 5 or 10 pounds) there will be a capacity. Find the weight you have on your tires and you have the answer.
BTW: the capacity will be different for singles vs. duals. Plan accordingly.
