Hi Whatsupchuck I went to Discount tire and bought Carlisle load range E ST tires from them for $509 balanced and new heavy duty valve steams. The tt I just traded in with the Carlisle tires had around 10,000 miles on them with no problems. Carlisle is one of two manufacture that has a speed rating of N 87 miles per hour. The rest are 60 or 65 or no rating for speed. I did not and will not air the tires up to there full working pressure of 80 psi. I aired them up to 70 psi. The rims are rated for 65 psi from what I have read on past posts so that put the pressure within less than 10% over there rating. The old tt I ran at 65 psi but that was a lighter tt also. The E load range tires will not raze the weight limit of your axles or the units frame. The E load range tires will give your unit a much more stable ride and peace of mind. What ever you buy make sure you are buying a tire with the newest born on date.
New tires are on my 2015 30wikss v-lite.
PS sold C load range tires to a lawn service for $200.00
Hi there are reasons to not run your tire pressure at full working load pressure if you have a tire that is rated higher than the load it carries but still want the stability and safety of a higher load range.
1. At full rated tire inflation pressure the tire my not have full contact with the road due to vehicle not having enough wight to push the tire flat on the road surface. Learned this one the hard way when I wore out the center tread of the tire in 8000 mile on my dully tires.
The tire will crown and the tire center will only have contact with the road.
2. You need to inflate the tire to meet or just exceed the load the tires are carrying and not have excessive side wall flex that will break down the cords or wires in the side walls and create excessive tire heating. The right pressure for the load will keep the tire in full contact with the road surface.
Hope this helps Tim