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Tire/Rim Compatibility Question

Old 07-21-20, 03:23 PM
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jimbrooks
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Tire/Rim Compatibility Question

Hi, I got a Fuji Sportif 1.9 Disc about a year or so ago. I'd like to convert it into a gravel bike, but I'm not sure if I can safely get away with using 38c Vittoria gravel tires (Terreno Mix) on the rims that came with the bike. The wheels are Vera Corsa DPD22, double wall, 28/32h Formula disc hubs, but I've been unable to find an internal width for them. Does anyone have experience with these wheels, what their internal width is, and if that would prevent me from using the 38c tires?

Thanks,

Jim
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Old 07-21-20, 05:10 PM
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I think the 22 refers to the outer width and the inner is 17mm. Can you not measure them? There are tire/rim width compatibility charts, maybe someone will link. Edit- found this-
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Old 07-21-20, 05:15 PM
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Thanks for the quick response. Quite frankly, the tires are horrendously difficult to get off and on (getting the last bit of the bead on by hand or tire levers is impossible; I usually have to use a tire jack). If no one happens to know, I'll give that a shot. I'm assuming that the inner measurement goes from under the hooks rather than the bed.

Thanks!
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Old 07-21-20, 05:25 PM
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If they're 17mm internal a 38 sounds unideal but fine. To put things in perspective in the bad old days many 26" MTB rims were as narrow.
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Old 07-21-20, 05:34 PM
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jimbrooks
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shelbyfv, sorry - missed the specs in the last part of your message. Thanks for that.
cpach, thanks for the comparative info. I'm guessing that, in light of that, cornering might be a little less stable.

Thanks again, guys.
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Old 07-21-20, 05:43 PM
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You will be fine on a 17mm rim with a 38mm tire.

As cpach said in the “bad” old days, which are still my current days, I’m running 2” tires on 17mm rims, and narrower, without any issues.

John
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Old 07-21-20, 07:14 PM
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I run 47mm and 52mm tires on 19mm rims without issue.
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Old 07-22-20, 08:47 AM
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You will also need to ensure that the wider tires will clear not only the frame but brakes, etc. The limiting spot on two of my bikes is the front derailleur mechanism interfering with the rear tire.
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