How to Measure Trailer Wheel Width
Updated 02/10/2026 | Published 01/23/2026
Question:
Hello. I have a horse trailer. I need to replace one of the wheels. Tire size is 205/75R15. The wheel is white, with 6 lug nuts and 10 round holes on it. I do see three wheels on your website that look identical, but I’m not sure if I need a 5 1/2 or 6 inch wide wheel. How do I measure that distance? From the inside to inside, or from the outside surface to the outside surface? Thank you in advance
asked by: Robert C
Expert Reply:
Hey Robert! The wheel width is measured bead seat to bead seat, which will be on the inside. See the video I attached further down on this page which explains exactly how to measure starting at the 50 second mark. The Dexstar Steel Mini Mod Trailer Wheel # AM20552 is the correct replacement if you have a 6" measurement.
Where are you hauling your horses next?
(click to enlarge)
Product Page this Question was Asked From
Dexstar Steel Mini Mod Trailer Wheel - 15" x 6" Rim - 6 on 5-1/2 - White Powder Coat
- Trailer Tires and Wheels
- Wheel Only
- 15 Inch
- 6 on 5-1/2 Inch
- Steel Wheels - Powder Coat
- Dexstar
more information >
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Robin H.
2/10/2026
Hey Robert, how did things go with measuring the width on your horse trailer wheel? Did the 6-inch Dexstar wheel end up being the right fit for your setup? Your update could make it easier for others replacing similar wheels.