Need to replace tires on my 38' fifthwheel that weighs 18,000 lbs Tires that came with rig are five ply I got a great deal on 12 ply tires Any reason for not upgrading to 12 ply tires?
I travel mostly in the west and northwest, and when I replaced the tires on my toy hauler, I specifically went to Les Schwab because of my experience with their customer service. I bought G rated Geostars and have been very happy with them. You need to have wheels rated to 110 psi. The tires are either 12 or 14 ply "rated". They are heavy and can be regrooved if needed.