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When you’re towing serious weight, you need tires that don’t flinch. The Karrier ST225/75R15 Radial Trailer Tire is built with an 8-ply, Load Range D construction and handles up to 2,540 lbs at 65 psi. Its sturdy sidewalls are made specifically for trailer use, giving steady handling and confidence under load without the flex or sway of lighter tires.
This radial ST tire has cords positioned at a 90-degree angle to the direction of travel, reducing rolling resistance and heat buildup for long highway hauls. The result is a smoother ride, better tread life, and improved stability at speed. With its M speed rating (81 mph) and double steel belts reinforced by full nylon plies, it runs cool and true even on extended trips.
Wet roads or dry pavement, this tire keeps its grip. The Karrier’s computer-generated tread pattern and premium rubber compound deliver maximum traction while maintaining a stable footprint. It’s a setup that resists uneven wear and helps keep your trailer tracking straight behind you in all weather.
Meeting Department of Transportation specifications, this tire is built for road use and backed by a 5-year limited warranty plus a 1-year worry-free guarantee. If it’s damaged in the first year, it’s replaced at no charge—peace of mind that matches its heavy-duty build and long service life.
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
Mike
1/12/2026
Great wear out of these tires, smooth ride without any empty trailer bounce.
Josh B.
1/12/2026
Tim
5/25/2025
Still good on my camper
Nick S.
5/27/2025
Darin L.
2/28/2021
They are still doing great. Use the trailer there on quite often to haul lumber, tractor and vehicles on it. Do love them and they are holding up well.
Do you have a question about this Trailer Tires and Wheel?
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Victoria H.
12/18/2024
I'm so glad these wheels withstood the long trip for you Gary, that sounds like quite the scenic drive! What was your favorite part?