Will the Erickson Spare Trailer Tire Mount Kit Work on My Utility Trailer with Round Rails?

Updated 09/26/2025 | Published 04/16/2025

Products Featured in This Question

Dexstar Steel Spoke Trailer Wheel - 14" x 5-1/2" Rim - 5 on 4-1/2 - White Powder Coat

(2583)

$59.03

Erickson Spare Trailer Tire Mount Kit

(182)

$30.44

Question:

ITEM EM77316 MY UTILITY TRAILER IT HAS ROUND RAILS WILL IT MOUNT SPARE ON THE OUTSIDE OF RAIL WILL THIS ITEM FIT MY TRAILER

asked by: Jack

Expert Reply:

Hello Jack,

Yes, you can mount the Erickson # EM77316 Spare Trailer Tire Bracket to a round trailer frame, but it requires a few modifications since the bracket is originally designed for square or flat frames.

The included U-bolts are shaped for flat surfaces, so to mount it securely to a round frame, you'll want to replace those with round U-bolts (which you can find at your local hardware store) that match the diameter of your trailer's frame. These round U-bolts will provide a snug fit around the tubing and can be used with the existing bracket if the thread spacing aligns; otherwise, you may need to drill new holes.

To improve stability and reduce stress on the bracket or frame, it's also a good idea to add a flat metal plate or a curved saddle bracket between the mounting plate and the frame. This helps distribute the load and prevents the bracket from twisting or deforming over time. For extra security, use lock washers or nylock nuts to keep the hardware from loosening due to vibration. With these adjustments, the bracket can be safely and effectively mounted to a round frame.

My apologies for the delay in receiving an answer, we had quite the spike of questions and are getting caught up. I see that you already ordered the part, let me know how the install goes.

expert reply by: Kate F

Kate F.

9/26/2025

Hey Jack, Did you have a chance to install the Erickson Spare Trailer Tire Bracket on your round trailer frame? I'm curious to know how it went and if the modifications worked for you. Your experience could really help others looking to do the same!