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When you’re hauling gear or equipment, you need a tire that can handle the weight without breaking a sweat. The Loadstar K399 Bias Trailer Tire, part #AM1HP22, carries up to 800 lbs at 70 psi with a Load Range C rating. It’s been tested to exceed DOT standards, giving you reliable performance under load at speeds up to 65 mph.
This tire’s bias-ply design uses thick nylon cords laid at a 30°–45° angle in alternating layers. That crisscross pattern gives the sidewalls extra stiffness so the whole tire flexes evenly over rough or uneven ground. The result is superior stability and a smoother ride whether you’re backing into a tight spot or towing across a bumpy lot.
If you’re updating an older setup, the K399 fits rims that are 8" x 5-3/8" wide and matches modern metric sizing—165/65-8 replaces older sizes like 16.5 x 6.5-8. With a section width of 6.6" and an outer diameter of 16.5", it delivers the same footprint and clearance as the original sizes used on many classic builds.
Every Loadstar K399 tire comes with a 1-year worry-free guarantee that covers replacement if it’s damaged within the first year. It also includes a 5-year limited warranty, so you can roll out knowing you’re covered for the long haul.
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
Brooke M.
6/10/2022
Wow, I hate that this got all mixed up on you! I have sent your information along to our customer service team and they will be reaching out to you to get this straightened out.
Do you have a question about this Trailer Tires and Wheel?
Info for this part was:
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Matt
8/28/2016
So far they have been the best we can find. They work well.