Air pressure when not towing

transamz9 wrote:

Cummins12V98 wrote:

transamz9 wrote:
I run 55 in the front all the time and 65 when towing and 45 when empty in the rear but I run 8 ply tires so 65 is my max.

Why would you run "D" rated tires when "E" are standard?

The tire I am running is not made in an "E" in the size I'm running. The "D" That I have on the truck has the same rating as the OE.;)

So if I am correct you are running a bigger tire that has the same load carrying capacity as the E tire that is stock.

Les Schwab on the West Coast is famous for selling people D big tires and saying they have the same carrying capacity as stock. That is true but very deceiving! The D has a much weaker sidewall and is not nearly as stable of a tire.

Friends had a F350 4X4 short bed and bought a 40' toy hauler and Les Schwab sold them Big Wild Country tires and said it would be fine. I advised strongly against it, they thought I was wrong because I don't like Les Schwab for many reasons.

Well they drove to Cali and back to WA and came over to me to apologize for not listening to me. They went to LS and reamed them because the rear tires were nearly bald in 3,000 miles and was a very bouncy and a scary ride. LS bought them a new set of tires that they used when they were not towing and stuck the Michelin E tires back on when towing.

So be very careful with your tires, not safe!