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When you need a tire that can handle serious weight, this one delivers. The Loadstar K399 Bias Trailer Tire packs an 8-ply Load Range D rating and supports up to 1,165 lbs at 70 psi. It’s been rigorously tested to exceed Department of Transportation standards, so it’s tough enough for consistent, heavy towing without giving up reliability or peace of mind.
This tire’s bias design uses thick nylon cords set at a 30 to 45-degree angle in alternating layers. That crisscross build gives the sidewalls extra stiffness so the whole tire flexes evenly across uneven ground. The result is better stability and smoother handling when you’re rolling over bumps, gravel, or soft surfaces.
Long runs in hot weather are no problem here. Rated for speeds up to 65 mph, this tire keeps its cool under load without sacrificing durability. The combination of low rolling resistance and balanced construction helps it track straight and smooth mile after mile.
You get real backup behind the performance. The Loadstar K399 comes with a 5-year limited warranty plus a 1-year worry-free guarantee—if the tire is damaged within the first year, it’s replaced at no charge. That kind of coverage shows how much trust the manufacturer puts in its build quality.
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
Chris G.
10/26/2017
After 12 months of on and off road use on my trailer, these tires are Still doing Great !
Juan
8/2/2024
Its working perfectly fine just like new ones! Totally recommend
Keith
4/1/2024
Outstand just like when I got it
Kent
4/22/2024
amazing tire
Do you have a question about this Trailer Tires and Wheel?
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Claire H.
5/15/2026
Thanks for sharing your project with us! It looks great!