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Open Pro to Velocity A23 - Resulting Tire Width & Limited Clearance

Hey all,

This may be a dumb question but I'm going to go ahead and ask it anyway.  My 'cross wheelset uses Open Pro rims which are getting a little long in the tooth and will probably need replacement soon.  I'm thinking about Velocity A23's as they sound like they'd be good for the application and aren't really any heavier than the OP's (does anyone have actual weights?) but lateral clearance between my chainstays is pretty tight.  With a 34mm Clement PDX mounted to the OP there's only a couple mm's of clearance between the knobs and the stays.  How much does a wider rim (23mm vs. 20mm) affect tire width at the tread and will I be pushing that limited clearance?  Does it actually make a practical difference at all?

Thanks in advance for the help!
Kevin      

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Switching to wider rims will increase the overall width of the inflated tire (measured at its widest point). In your case it will probably be around 1mm total. However, the widest point of the tire will also move slightly toward the rim. Thus if you have tapered chainstays, you probably have nothing to worry about. If your chainstays are straight and parallel near the tire, you'll have somewhat less clearance. With the wider rim you'll benefit of lower rolling resistance and better cornering, so I would go for it if I were you. Personally, I like the Velocity Dyad and Alex Adventurer rims, which are 24mm wide.
David - thanks for the info. I may give these a shot.

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