Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
If you put 10 plys on a 1500, just go with whatever the sticker on the door frame says. The only reason I could see going with more pressure is if you intend to overload the truck. The 10 plies will probably already ride rougher even at the recommended pressure. No sense making that any worse by over inflating them.
Tire pressure on factory tires is 35 psi.
I put new tires on 22 Ram Bighorn.
285/55/20. AT 10 ply
What do you recommend for air pressure in these tires?
Sidewall says 80 psi max.
Handy tool (and bookmarked now). I've never used that before.@Pines19 , I second the use of the TireSize.com "Calculate New Tire Pressure" calculator that @Farmer Fran and @LouM reference. It takes into account your stock tire size, stock pressure from your placard, new tire size, and payload capacity to calculate a new pressure, and it includes the 10% factor recommended when switching between P-metric to LT-metric tires. I believe it's based on the tire loading tables generated by the Tire and Rim Association, and it's by far the most comprehensive and reasonable method I know to come up with a new tire pressure for your new size tires. It's basically a calculator for the process linked to by @lpennock above.
Psi within 10psi of the door sticker will not cause vibration. It’s a balance issueSorry to resurrect an old thread, I just installed aggressive ATs on my truck. Size 315/70R17.
The installation shop put them at 40 psi.
I notice that after 100 kph, there are vibrations on the right side... These are side to side. I was told that perhaps the tires were over inflated. So far we've checked the balancing twice.