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Can 20.5x8.5-10 Trailer Tires be Used in Place of 18.5x8.5-8 Tires on Snowmobile Trailer  

Updated 06/03/2026 | Published 08/11/2015

Question:

I have a triton snowmobile trailer and need to replace wheels and tire.currently have 18.5x8.5-8 and looking at 20.5x8.5-10. Both are 5 hole pattern. Will these fit?

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Expert Reply:

A 20.5x8.5-10 is going to be about 2 inches taller than the 18.5 tires you have now. If there is enough space above the existing tires to go to the taller size then you can use them. I have included some links on tires for you as well.

expert reply by:
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Michael H
Dave profile picture

Dave

6/3/2026

You can use them and they will bolt up if they are 5 on 4.5. The issue you will run into with that trailer and tire combo is the tire hitting the bottom of the deck going over hard bumps with 2 sleds on. Triton runs a 1" spacer in there when running that tire size.

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