Can Trailer Tires be Inflated to Lower PSI than Listing on Sidewall
Question:
Trailer is rated for ST225/75R15 D, trailer is rated at 8,600 lbs., lets say 10K max. Original tires 65lbs pressure, D, new tires are 80 lbs. E, would there be a problem with inflating new tires only to 65lbs.?
asked by: Greg K
Helpful Expert Reply:
Trailer tires should always be inflated to the maximum air pressure as listed on the tire's sidewall. I cannot recommend inflating your new tires to below their maximum psi, as the amount of weight they are designed to support will also be reduced. Your ST225/75R15 sized tires with a Load Range E have a maximum capacity of 2,830 pounds at 80 psi. Inflating them to 65 psi will essentially reduce their maximum capacity to an unknown number, which can potentially cause you to overload them and damage the tires and trailer. I recommend always inflating your new tires to the 80 psi that is listed.
Having tires on your trailer that are capable of handling much more than what the trailer actually weighs is not an issue and can actually be beneficial, as it will basically allow the tires to run cooler. The most common cause for trailer tire failure is excess heat, so a tire that runs cooler will last longer.
I have attached a couple of articles on trailer tires and wheels that you might also find helpful.
Product Page this Question was Asked From
Karrier ST225/75R15 Radial Trailer Tire - Load Range E
- Trailer Tires and Wheels
- Tire Only
- Radial Tire
- Load Range E
- 225/75-15
- 15 Inch
- M - 81 mph
- Kenda
more information >
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