Choosing a Replacement Hub and Wheel for a Northern Tool Ultra-Tow Trailer

Updated 03/25/2025 | Published 03/12/2025

Question:

I have a Northern Tool Ultra-Tow trailer. Id like to put better hubs and wheels on. What measurements do I need to have to purchase the correct parts? Thanks for your assistance.

asked by: James P

Expert Reply:

Hey James, thanks for reaching out!

What is the weight rating of your axle(s)? Most of those use standard parts so I'll be able to help you out that way, or if you know the part numbers of your bearings and seals or the diameter of your spindle where they ride I can help you get the parts you need.

For the wheels, what is the tire size (printed on the sidewall) and how many bolts are used to secure the wheel to the hub?

expert reply by: Jon G

Jim

3/25/2025

The weight rating of the trailer is 1060 pounds. I’m not sure if that’s the same as the axle weight rating. The tires are 4.8 0–12 With a four bolt wheel. Thanks for your reply Jim

Jon G.

3/25/2025

@Jim Not quite, but that at least lets me know you have a really lightweight axle so we're probably looking at a 2K option. This means you need either part # AKIHUB-440-2-EZ-1K that fits 1" diameter BT8 spindles and uses a 1.249" inner diameter grease seal, or the part # AKIHUB-440-2-EZ-2K that fits a 1.063" diameter BTR spindle and uses a 1.50" inner diameter grease seal. As for a tire/wheel upgrade, I recommend the Kenda KR25 Radial Trailer Tire with 12" Aluminum HWT Wheel # AM31208HWT. The tire is rated for 81 mph when it comes to speed, and has a max weight rating well over what your trailer can handle. It also comes with an aluminum wheel that not only looks better than the steel wheels, but the aluminum also means no rusting! Let me know what you think!