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When you’re towing for hours on the interstate or hauling through heat, you need a tire that’s built to run cool and stay strong. The Provider ST205/75R15 Radial Trailer Tire (part?# TR20515D) has an 8-ply rating and a 2,150-lb maximum load at 65 psi. Its M speed rating lets you cruise confidently up to 81 mph—far higher than the usual 65 mph limits found on most trailer tires.
This radial is all about durability. Inside, double steel belts and double polyester cords keep the tread firm under load while helping it wear evenly. A nylon overlay wraps the steel belts to guard against tread separation, and each tire is bake-tested to make sure the rubber stays resilient over time. It’s rated to handle real highway use day after day without breaking down from heat or stress.
Rain, snow, or slush doesn’t have to slow you down. The Provider uses an automotive-style tread pattern with broken ribs and thin sipes that channel water away from the contact patch. That extra grip helps keep the trailer steady and reduces the chance of hydroplaning when pavement turns slick.
Radial cords run 90 degrees to the direction of travel, cutting rolling resistance so the tire flexes easily and runs cooler than bias designs. That means less heat buildup, longer tread life, and better tracking at speed. It’s a simple difference that makes highway towing smoother and more predictable—especially on long hauls or in hot weather.
The TR20515D mounts on 15" x 5", 15" x 5-1/2", 15" x 6", and 15" x 6-1/2" rims. Overall diameter is 27.17" with a section width of 7.99". It meets Department of Transportation (DOT) specifications and exceeds Federal Motor Vehicle Safety Standards (FMVSS), so you know it’s built for real-world towing demands and highway reliability.
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"
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
Gwendolyn Y.
4/7/2025
They do look great, Bruce! Where have you traveled with them since getting them?
Patrick R.
10/1/2016
Perfect! Best tires yet. Very little wear after over 10,000 miles
Mike L.
10/9/2025
Glad to hear that, we're happy your tires are working well for you!
Laura E.
11/17/2017
When a tire is given a ply rating, it doesnt necessarily indicate the number of layers of material the tire is constructed of. As the need for greater fuel economy and the cost of materials rises, the tire manufacturers have gone to using lighter but stronger materials like Kevlar that provide the same strength that would have taken several layers of materials years ago. Fewer layers also means less heat build-up, which is essential for longer tire life.All that really matters is the weight capacity of the tire. For example, the Provider ST20575R15 radial trailer tire Item TR20515D has a 2,150-lb maximum load at 65 psi capacity. With a trailer tire, you have to have it inflated to its max psi in order for the tire to have its full capacity.
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Andy
7/11/2017
I am still using the same tires I purchased over a year ago. They are working great and dont show signs of needing replacement anytime soon. I should go measure the tread depth and see where they are at. I use the trailer on a weekend basis so they are still plenty good.