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When you’re hauling gear or running long distances, this tire’s strength gives real confidence. The Karrier ST175/80R13 Radial Trailer Tire is Load Range D with an 8-ply rating and a maximum load of 1,650 lbs at 70 psi. It’s built to handle highway speeds up to 81 mph (speed rating M) while meeting Department of Transportation specifications. That means you get the toughness to carry heavy loads and the reliability to cruise without worry.
You’ll feel the difference radial design makes. The tire’s cords run at a 90-degree angle to travel direction, so it flexes more evenly and rolls smoother than a bias tire. The 5-rib tread pattern supports even wear, while silica-infused tread and angled sipes help reduce hydroplaning for safe traction in wet or dry conditions. It’s a well-balanced setup that stays stable on the highway and composed off pavement.
Peace of mind comes standard here. The Karrier ST175/80R13 includes a 1-year worry-free guarantee—if it’s damaged within the first 12 months, it’s replaced at no charge. On top of that, it carries a 5-year limited warranty. It’s real protection for those who put serious miles on their equipment.
Radial ply construction keeps internal cords from rubbing together, cutting down rolling resistance and heat buildup under load. Less heat means longer tread life and steadier steering at higher speeds. When you’re loaded up on hot asphalt or running cross-country, that efficiency goes a long way toward keeping everything rolling smooth.
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 L.
11/24/2025
Hi Mark! During that year, the tires have been stored in a controlled environment with no exposure to UV light which causes the compounds in the rubber too break down over time. That year of storage has in no way shortened the lifespan of your tires, so the 'clock' would start once they're mounted on rims and installed on the trailer. You will still get your full three years of use.
Greg
11/28/2025
If put 5000 plus miles on the tires in the last year at speeds around 75 mph and have had no issues. Great tires thanks etrailer.
Victoria H.
4/14/2025
I understand your concern Erwin, but please reassured that our tires are stored in our climate controlled warehouse shielded from the sunshine and high temperature, which is usually what wears tires down.
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Erwin
5/15/2026
Oh my, they are still holding air. So far this year they made it to Orlando and Racine, about 4200 miles. Going through Illinois. I thought for sure Id have to air down due to road conditions. But they did fine.