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This Kenda Loadstar K399 tire is made for work. It’s a bias-ply design built with thick nylon cords set at a 30- to 45-degree angle, giving it strong, stiff sidewalls that hold up under load and flex together on rough ground. Rated Load Range C with a 6-ply rating, it carries up to 935 lbs at 50 psi. The bias build gives it superior stability when towing across uneven surfaces or soft ground.
When a job takes you out on the road, this tire is ready. It’s speed rated M for 81 mph and exceeds DOT standards, so it handles highway speeds without worry. The tough construction resists heat buildup and rolling resistance stays low for a smooth, confident ride mile after mile.
This tire fits standard 8" x 7" rims with an inflated outer diameter of 18.3" and a section width of 8.9". That makes it an ideal match for setups using modern 18.5x8.5-8 equivalents while keeping clearances consistent. The proportions give solid ground contact for traction and control when loaded or empty.
Durability is backed by coverage that matters. The Loadstar K399 Bias Trailer Tire comes with 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. That kind of support means you can get rolling knowing you’re covered if something goes wrong early on.
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:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews

Jay
10/29/2024
Tires are still holding air. I’m still very happy with my purchase.

David
1/1/2021
Excellent tires. Not one problem.!I will buy more for the golf cart

Nicholas
12/23/2023
Product is still in great shape after one year of use. Was able to pull my sleds everywhere last year.

Paul O.
4/12/2020
Still in good shape wearing well
Do you have a question about this Trailer Tires and Wheel?
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Gary
5/18/2026
Very Good, excellent quality