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When you’re logging miles with a loaded trailer, this radial tire is built to handle the weight and the heat. The Provider ST225/75R15 has an 8-ply rating and carries up to 2,540 lbs at 65 psi. With a speed rating of M (81 mph), it’s ready for long hauls where many ST tires top out at 65 mph. It meets DOT specifications and exceeds FMVSS standards, so you can tow with confidence mile after mile.
This Provider radial uses double steel belts and double polyester cords with a protective nylon overlay to fight tread separation and heat buildup. That radial design keeps rolling resistance low, helping the tire run cooler and last longer on the highway. It’s bake tested to ensure the rubber compound holds up over time, so the tread stays strong through repeated trips in hot conditions.
The automotive-grade tread design stands out from standard trailer tires. Instead of solid ribs, it has broken ribs and fine sipes that channel water away from the contact patch, giving better traction when roads are wet, snowy, or icy. Tread depth bars make it easy to see wear at a glance, so you always know when it’s time for replacement before hitting the road again.
With a section width of 8.78" and an outer diameter of 28.31" when inflated, this ST225/75R15 tire fits standard 15-inch wheels in widths of 6", 6-1/2", or 7". The sturdy sidewalls are made specifically for trailer use—not passenger vehicles—so they can handle heavy tongue weights and rougher towing conditions without flexing too much under load.
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:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
Ken W.
3/11/2018
Tires are still doing great . No problems with heavy hay loads..
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Carl P.
1/16/2020
Throughout the first year of traveling with the Provider ST22575R15 mounted on my travel trailer, I have been impressed with the performance of the tires in wet or dry road conditions and the lack of tread wear. When the time finally comes to get new tires, I will once again purchase the Providers.