What Should Tire Pressure be for a Load Range G 110 psi Tire

Question:

I have a raptor 384pk triple axle with a gross wt.of 18500 lbs. My question is how much pressure should I run in the tires? Max pressure on these load G tires is 110 psi. I was running Load E tires prior to the new set of load G tires.

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Expert Reply:

You always need to keep your trailer tires filled to the max cold psi rating. If your current load range G tires have a 110 psi rating then that is what you need to keep them filled to.

Tire blowouts are a result of damaging a tire (like hitting curbs), under or overfilling a tire, exceeding the speed rating for the tire, exceeding the weight limit, or even messed up suspension parts.

For example, the Provider ST235/85R16 Radial Trailer Tire # TTWPRG235R16 has a load range G which is 4,400 lbs at 110 psi for a single tire application like what you have. It also has a speed rating of M which is 81 mph. If you don't have the tire filled to 110 psi then it will get hot quickly and can cause a blowout. Most trailer tires have a speed rating of 65 mph so if you were exceeding that speed limit then that would also explain the blowout.

If you have been following all of the requirements for your tire when you had the blowout then you may want to check to make sure your suspension is in good working order.

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Jon G

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