Narrow tires on wide rims- Mtbr.com
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  1. #1
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    Narrow tires on wide rims

    Hi,

    I have 700c (which I think are 29inch wheels) - i25 tubeless rims (inner width 25mm) they are on my Gravel bike which I use purely for road riding now.

    I currently have 35mm tubeless tires, however I want to move down to 32mm which is beyond what most manufactures state. To be honest most info is about fitting wider tires on narrower wheels and not the other way around.

    Does anybody have experience of putting 32mm tubeless tires on 25mm inner width rims? Did they stay on or get unusual tire wear?


    Cheers

  2. #2
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    Quote Originally Posted by Roadgravel246 View Post
    Hi,

    I have 700c (which I think are 29inch wheels) - i25 tubeless rims (inner width 25mm) they are on my Gravel bike which I use purely for road riding now.

    I currently have 35mm tubeless tires, however I want to move down to 32mm which is beyond what most manufactures state. To be honest most info is about fitting wider tires on narrower wheels and not the other way around.

    Does anybody have experience of putting 32mm tubeless tires on 25mm inner width rims? Did they stay on or get unusual tire wear?


    Cheers
    3mm isn’t much, and honestly is probably within the margin of tire sizing error. In other words, one manufacture’s 32mm might be bigger than another manufacturer’s 35.

    I’d try it for sure. Only issue you *might* have is that the 32mm tire profile ends up a tad less round than intended.

    Again, I wouldn’t worry about.

  3. #3
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    I'd run them at the upper end of the recommended inflation limit.

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