Thursday, March 3, 2016
Tire Inflation pressures for your RV trailer
Government and tire industry standards agree. The correct inflation pressures for your RV trailer tires are determined by it’s manufacturer and depicted on the Vehicle’s certification label, in it’s owner’s manual and on tire placards. They are called, “Recommended Cold Inflation Pressures”.
Normally - over 95% of the time - recommended inflation pressures for RV trailer tires are going to be the same as the maximum amount found on the tire’s sidewall. That leaves zero room for adjustments. OOPS, there is a way for adjustments to be made. Go to a good set of vehicle scales and see what the weight is for each wheel position on your trailer. Then use those findings to balance your cargo load so no tire is overloaded. It may require unloading things to your truck or just not carry them.
Replacement tires must provide the same or more load capacity than the Original Equipment tires. Replacements with excess load capacity by inflation can be adjusted up to the maximum load capacity shown on their sidewalls. But, you should still weigh your trailer and balance it’s cargo load.
Don’t be duped by recommendations to air your tires to the load carried. That’s what truckers do and you can see the results on our highways all across the country. The FMCSA has no provision for recommended tire inflation pressures. The inflation pressures for our RV trailer tires (any design) were set in motion by FMVSS. Don’t let those that want to use trucker regulations confuse the RV trailer tire inflation subject. What is good tire inflation for tractor-trailer tires is not good for RV trailer tires.
Bottom line: At replacement time get tires with 12% - 15% excess load capacity above your GAWRs.
Posted by FastEagle at 8:09 AM