Maximum PSI Rating for HWT Hi-Spec Aluminum Trailer Wheels

Updated 09/23/2026 | Published 09/21/2026

Products Featured in This Question

Aluminum Hi-Spec Series 6 Trailer Wheel - 15" x 6" Rim - 5 on 4-1/2

(302)

$172.38

Westlake ST235/80R16 Radial Trailer Tire - Load Range G

(567)

$379.81

Question:

Hello, I have a Question, regarding HWT Hi-Spec Aluminum Trailer Wheels. I have a Set of these Wheels and need some help with some Ratings/Spec. info.: I purchased these new Aluminum Wheels back in 2011 see Specs. below, along with two2 New Dexter 7200 lb. Electric Brake Torsion Axles as upgrades to my 1995 United 32ft. Enclosed Race Car Trailer. Wheel Specs. stamped on the Wheel: HWT 3200 lbs. 6774LC 15x7JJ I am now replacing the older 80psi rated Tires with New 120 psi Max. Pressure, 16 Ply rated - ST235/80R16 Tires on the Trailer and have a Question.: 1 What is the Max. PSI Rating for these Wheels?.....Ive seen some AI information online stating that these Wheels are good for up to as much as 200 psi. As Im understanding, the Wheel itself is not the limiting Factor...I just need to run Steel Valve Stems...... The Wheel is fine for this Rating......Is this correct?, .....OR...... What is the Max. PSI Rating for these Wheels?

asked by: Harold H

Expert Reply:

Hi Harold.

Usually the limiting factor is not the trailer wheel itself. For example, our Aluminum Hi-Spec Series 6 Trailer Wheel # AM22651 does not have a maximum PSI rating; the tire and valve stem determine the air pressure you can safely run.

You mentioned the wheel is stamped 15x7JJ, but an ST235/80R16 tire requires a 16" wheel, so there may be a typo or a marking being misread there.

If you can send me a clear picture of the markings on the wheel, especially the size and part/model number, I can dig into your specific wheel and verify whether you're okay running the new tires at 120 PSI. You would also want to make sure the valve stems are rated for that pressure. And like I said, the wheel is NOT typically rated for psi.

For example, the Westlake ST235/80R16 Radial Trailer Tire - Load Range G # WE76FR has a maximum cold pressure of 110 PSI and is intended to be inflated to that pressure when cold. That makes it very likely your new trailer tire should also be run at its listed maximum cold PSI, but I would still follow the pressure specified by the tire manufacturer for your exact tire.

What kind of trailer is this going on?

expert reply by: Andrew N

Harold H.

9/23/2026

Hi Andrew. Thanks for your reply. I'll send you an e-mail, as i couldn't seem to see how to "attach" Photos on this reply box. Harold

Andrew N.

9/23/2026

@HaroldH Yeah that isn't built into the site yet unfortunately, but you can email to me directly. thanks!

Harold

9/23/2026

I understand. I just sent you an e-mail with Photos.

Andrew N.

9/23/2026

@Harold Thanks for sending the pics to my email. Those wheels look sharp on that big trailer! Do you haul racecars in that thing? So yes, the pictures confirmed you have 16x7JJ wheels rated for 3200lbs each. They do NOT have psi rating. You will just want to go off of your trailer tires, which are typically filled to their max psi when cold. That is standard for trailer tires. And you should get valve stems that are rated high enough, which typically is not an issue.