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When you’re carrying serious weight, this tire is designed to handle it with confidence. The Triangle ST235/85R16 radial tire is Load Range G with a 14-ply rating and a 4,400-lb maximum load at 110 psi for a single tire. It’s built for stability and strength under pressure, so it stays reliable mile after mile.
Made for real highway use, this tire carries a 75-mph speed rating and meets DOT specifications. The combination of computer-generated tread design and premium rubber compound ensures dependable traction in wet or dry conditions. It runs smooth and steady even when the road gets hot and the trip gets long.
All-steel belts add muscle to the carcass, resisting wear and keeping tread life long. The deep, rugged tread pattern grips the pavement while standing up to demanding hauls. It couples the strength of a bias tire with the durability and stability of a radial, so you get the best of both worlds.
The radial design keeps internal friction low by positioning the cords at a 90-degree angle to the direction of travel. That means less rolling resistance and less heat buildup, which translates into longer tread life and better steering control at higher speeds. It’s a construction that’s made to last through countless runs.
Road hazards happen, but this tire has your back. It comes with a 1-year worry-free guarantee—if it’s damaged within the first 12 months, it will be replaced at no charge. That’s assurance you can take along for every mile ahead.
1. Count the lug holes
Look at the wheel hub or the back of the wheel and count how many lug holes there are(also called bolt holes).
Common configurations include: 4-lug, 5-lug, 6-lug and 8 lug
2a. For even lug counts (4-lug, 6-lug, 8-lug)
Measure from the center of one lug hole directly across to the center of the hole opposite it.
Common configurations: 4 on 4", 6 on 5.5", 8 on 6.5"
2b. For odd lug counts (5-lug)
Measure from the center of one lug hole to the outer edge of the hole directly across (not center-to-center since there's no directly opposite hole).
Common configurations: 5 on 4.5" (most popular), 5 on 5", 5 on 4.75", 5 on 5.5"
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, everybody, this is Jeff at etrailer.com. Today we're gonna take a look at this Triangle ST235/85R16, heavy-duty radial trailer tire in a Load Range G. Now this Triangle heavy-duty special trailer radial tire is designed for use on trailers. We mentioned it's a special trailer design, has the ST stamping on it. This couples the strength of a bias tire with the durability and stability of a radial tire. And it is created specifically for trailers.
It's not intended for use on other vehicles. This does use an all-steel belt construction to enhance durability and extend the tread life. The tread design, if you look at it, it's a nice, computer-generated tread design and it offers premium rubber compound materials to give you superior traction in wet or dry conditions. This does meet the DOT, Department of Transportation, specifications. And just to go over the size, which would be stamped on the sidewall, you can see we mentioned ST, for special trailer, 235/85R16.
The R means that it is a radial tire. Section width on this tire, 9.3 inches. Overall diameter from bottom to the top is 31.7. And we mentioned this is a Load Range G, which means it's a 14-ply rated tire. So the maximum load on this, if it's used in a single tire application is 4,400 pounds at 110 PSI.
And if it's used in a dual tire application, it's 3,860 pounds at 110 PSI. And the last thing I do wanna mention is they do come with a speed rating now, and the speed rating is stamped on the sidewall with a letter designation. And where you'll find that is right after the size we went over. You'll see two numbers for the load index and then the letter L. Speed rating L on this tire means that it has a 75 mile per hour speed rating.
But that's gonna do it for the review on this Triangle ST235/85R16 heavy-duty radial trailer tire in a Low Range G.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
I can already tell by looking at these new load range G tires are much better than the E tires they’re replacing.
etrailer is my go to for all my rv equipment needs. got my new tires to me fast and at a great price.!!!
14 Ply for an 8K axle. Super heavy duty. Bought as a spare, but this is what my 16K tilt trailer has from the dealer.
Hello, my order came in on time. Thank you
Exactly what I was looking for…heavy duty and does the job
Great service and speed of delivery
Just came home from a camping weekend, my tires were delivered and stacked up neatly next to garage. Thank you again. And shout out to Graig and Victoria, wildlife rv. And open roading, Joe and Katlin.
tires arrived on time look great
Good price, fast shipping.
The tires that I received had a build date of 4824. Which tells me
There already over a year and half old. Thought I would get tires that newer. I’ve order stuff from trailer in past and am very happy with them. But these tires i wouldn’t of bought knowing there where already this old
Info for this part was:
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Lazer S.
4/21/2026
Sorry about that, Joshua. I'm surprised these were that old as we tend to go through them fairly quickly. I will say these are stored out of the elements and the warranty doesn't start till you receive them, so you will still get a full life out of them. That said, we can reship replacements out to you if you would like. Have you mounted these yet?