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rim side wall width?

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rim side wall width?

Old 01-04-10, 09:29 PM
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rim side wall width?

VeloCity states the outer rim width on all its rims but I need to know the inner rim width (before I buy) what is a reasonable estimate for this difference?
nice picture here
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Old 01-04-10, 10:14 PM
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Originally Posted by chico1st
VeloCity states the outer rim width on all its rims but I need to know the inner rim width (before I buy) what is a reasonable estimate for this difference?
nice picture here
Not sure why that even matters. What rim are you looking at.
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Old 01-04-10, 11:19 PM
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the dyad...
you can figure out what tires you can put inside the rim based on the inner rim width... i would like to know what tires i can fit in there.
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Old 01-05-10, 01:08 AM
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Originally Posted by chico1st
the dyad...
you can figure out what tires you can put inside the rim based on the inner rim width... i would like to know what tires i can fit in there.
You've been given false information. The only width that's important is the outside width. The Dyad needs a min 25mm tyre and up.
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Old 01-05-10, 08:39 AM
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Sheldon says otherwise
The ISO system uses two numbers; the first is the width of the tire or rim in millimeters (The actual tire width will vary a bit depending on the width of the rim. The rim width is the inner width measured between the flanges as shown in the diagram.)
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Old 01-05-10, 10:46 AM
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Mavic gives the outer rim dimention as 19.6 mm. I have one here and the inner width is a little less than 15mm. Mavic says that the rim is good for tires from 19 to 28 mm.
My Open sport rim is 20.2 mm and Mavic recommends a tire width between 19 and 32 mm.
They don't give the inner width for any of their rims.
There seem to be some misunderstanding of the ISO standard.
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Old 01-05-10, 10:56 AM
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Originally Posted by chico1st
Sheldon says otherwise
Let me explain it to you plainly.

Regardless of whether or not a tyre runs true to its marked size, once inflated to riding pressure the width of the tyre cannot be narrower than the *outside width* of the rim. Which is why it's the only width that matter for practical purposes. Go think about it. Not everything on Sheldons pages is correct, or useful if interpreted incorrectly.
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Old 01-05-10, 12:34 PM
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If you must know the details, the guys at Veloicty USA are very quick to anwer questions. You can call them at (616) 243-3400 or email them at velocity@velocityusa.com I have spoken to them a few times and due to my location, even visited thier warehouse in Grand Rapids.
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