Worn out subject, wheels and tires

Old-Biscuit wrote:
2012 Wildcat........5 year old rig
OEM tires were ???

Replaced them at 3 yrs old.....2 yr old tires blew

What pressure were you running them at....?

The GY marathon 235/80/R16 E at 10 ply....3420# at 80 psi
Where did you get 6 ply Marathons...and 65 psi??




These were 3rd set of tires. OEM were an off brand that I replaced after 1 year as they were not wearing well even tho I keep a compressor in trailer and keep tires between 75-80 psi (not sure how you determined I was running at 65 psi). I use a Tire Minder pressure sensor as well and check it regularly for PSI and heat. Second set Dealer put on Continentals. After a tire tread separation in year 2 I replaced with Marathons through the dealer that were recommended to me by a couple people 5th wheel with experience.

I read the side of the Marathons 3 times and it listed the "sidewall" at 6 ply. I did not look father as I had already decided to replace wheels and tires.

The "OEM wheels" had a part number and were stamped on the inside 3100lb. max. Research as I indicated in the OP showed a recommended load for those wheels at 2500lb. Thus I went with heavy duty steel wheels with a rating of 3500lb. This trip was to Monument Valley with daily temps from Kansas to Utah in the high 90's. The Sailun's ran cool the entire trip. I checked hub temps at every stop as well and those were cooler than I had experienced with either of the 3 previous sets. Aluminum wheels will gain more heat than steel and I suspect that could contribute to it.