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When you’re pulling weight down the highway, this tire is built to hold up under pressure. The Loadstar K399 Bias Trailer Tire fits 10" x 6" wheels and carries a maximum load of 1,100 lbs at 50 psi. It’s rated M for 81 mph and exceeds DOT standards for safety and reliability. That means less worry about heat buildup or blowouts when the miles start stacking up.
Off-road or on uneven surfaces, the K399’s bias ply build keeps things steady. Layers of thick nylon cords set at a 30- to 45-degree angle crisscross through the carcass, giving the sidewalls extra stiffness while letting the whole tire flex together. The result is better stability and smoother handling when you’re moving over ruts or gravel.
This tire’s construction is made for real work. It provides superior stability that helps reduce rolling resistance for a smoother ride whether you’re on dirt or pavement. The thick bias ply structure stands up to abuse that would wear out lighter tires fast, so you get lasting durability in demanding conditions.
Every Loadstar K399 comes backed by a 1-year worry-free guarantee. If it’s damaged in any way within the first 12 months, it’ll be replaced at no charge. That’s extra assurance that your investment is protected while you put this tire to use.
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

Brian
7/11/2021
Only about a thousand miles after 1st year, absolutely no issues. Just like the originals. Great product!
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Roland
5/31/2026
Great Product..no issues!