6 ply or 10 ply. Would I see a difference?

Terryallan wrote:


Usually the factory tires are only rated to 2175lb, at 44PSI. going to a tire rated 2601lb to 2760lb at 51PSI would be the thing to do. And no the ride with out the trailer would be just about the same as the 2175lb tires. You would just need to lower the tire psi to around 40psi with out the trailer. and of course air them to max psi, 51psi while towing.

"Usually" is not totally accurate, IMO. Plenty of half tons that come with greater than 44psi rated tires and 2175lbs isn't a magic number as there are many different load ratings in that range depending on tire size. My last 2 half tons had heavier OEM tires. Plus aside from new vehicles, the tires on it are whatever the last person installed.

Any upgrade is an upgrade, as you mentioned going to what is commonly referred to as XL rated tires.

That said, going to a full LT tire with a load index of 121 or greater has alot more benefits than drawbacks. Actually there's zero drawbacks, save for initial cost, which is generally more than offset by treadlife.
Advantages of a "LT" or "D / E" rated tire on a 1/2 ton.
Treadlife: Comparable brand and models often have greater tread depth than the P/XL versions. And often made with a more durable compound (essentially harder rubber, which can = slightly less traction in very poor conditions, but not if aired down properly for those conditions).
Handling: Stiffer sidewalls will give less, even at comparable pressures, making the vehicle handle a bit better. But not at the expense of ride comfort as that is primarily a function of pressure.
Stiffer sidewalls and harder compounds will further reduce wear of outside treads due to scrubbing in corners.
Durability: Thicker carcass = less prone to punctures.
And of course load capability: Most all D or E range tires are overkill for capability and provide a much improved factor of safety over tires that are "just enough."

Really a best value/no brainer thing for half tons. Not "necessary" in alot of conditions, but also not alot more money generally either.