Originally Posted by dcfluid
I've looked into this as well but decided against the 10 ply rating tires. You will need to run close to 50 psi for the 10 ply tires to stay safely beaded due to their very stiff carcass. The truck is optimal around 40 psi with 6 plys so I passed.
My neighbor got the 10 plys from the factory and had to take them off due to the harsh ride.
I just checked my tire pressure and its at around 32 psi. It's -11*C this morning. I drive a really bad logging in the summer to get to our cabin (60 km of logging road) and usually run around 25 psi. I used to drive a diesel 1 ton on the same road and ran around 30 psi. So, I'll have to disagree with you on the 50 psi minimum to stay safely beaded.
As for the harsh ride. I never drove my truck with the stock "car rated" tires so I don't know.