What should the PSI be in the trailer?
I have a trailer which has Sailun G rated tires. The maximum PSI of air is listed as 110 PSI. I was carrying 90 PSI but recently was told that the maximum PSI, that is 110 PSI is the amount of air I ...
Forum Discussion
The advantage to running ST tires at max. sidewall psi is that you get the highest possible reserve load capacity for your particular tires and trailer weight. You want at least 15% reserve capacity and more is better to reduce the risk of a tire failure. I'd weigh the trailer fully loaded to max. and compare to the total load rating of the tires. If it doesn't hurt the tires to run at max psi, why not?
Roger Marble talks about it on his RVtiresafety.net blog. We upgraded from the OEM LRC tires to LRD Marathons (made in
China) and have about 30% reserve load capacity and 20+K miles later, no tire issues. I always keep the tires inflated to 65 psi. We're going to replace them with the new Endurance tires in same width and run them at their 80 psi rating. We'll get more reserve load capacity and even lesser risk of a failure.
Roger Marble talks about it on his RVtiresafety.net blog. We upgraded from the OEM LRC tires to LRD Marathons (made in
China) and have about 30% reserve load capacity and 20+K miles later, no tire issues. I always keep the tires inflated to 65 psi. We're going to replace them with the new Endurance tires in same width and run them at their 80 psi rating. We'll get more reserve load capacity and even lesser risk of a failure.
