My 81' Burro has a sticker that says 35 P.S.I. BUT that was in 1981 for 13" car tires that came with it.
I ran at this pressure with my tires for 3 years and had no problems but when I replaced them with 13" ST tires rated at 50 lbs I ran them at 35 and they both went flat on the same trip withing 800 miles of each other There is some contention that the high pressure valves may have failed but since then I run at 45 to 50 PSI and have no problems so far.
Knock on wood.
I know this is an old thread, but I have a tire story. I bought a Burro
this October, it came with new tires that say 1100 lb max load at 35 psi max pressure. So that's 2200 lb together. I noticed that they seemed to get unusually hot in use. It made me nervous.
Well, today I weighed the Burro at the Flying J: 2020 lb on the axle
. That's with the water tank empty, the LP tank partially empty, and no camping stuff loaded.
Too close for my comfort. How can I enjoy a trip if I'm worrying about a blowout?
So I ordered a couple of new Goodyear Marathons with 1360 lb. capacity at 50 psi. When I get them put on tomorrow, one of the current tires will become the spare (needed a newer spare anyway).
Funny, these tires that are now on the Burro say they're 6 ply but they aren't rated like 6 ply tires. I'll sure feel better when I get some better ones put on.