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Are 25c better than 23c tires for certain conditions?

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Are 25c better than 23c tires for certain conditions?

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Old 05-24-11, 03:22 PM
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Originally Posted by rruff
They have... narrow tires are better for aero and generally faster overall at racing speeds... and I'm referring to 20mm vs 23mm. The reasons to go wider are rough roads, grip, etc.
As an example, the Zipp 404's I just bought are designed (using wind tunnel testing) for a 21mm tire. I put 23's on them, for now, because Iinitially I'll be racing them over what I expect to be some fairly rough asphalt.

Wheels that are wider at the tire bead are claimed to minimize the aero penalty inherent with wider tires.
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Old 05-24-11, 03:44 PM
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Originally Posted by AzTallRider
Wheels that are wider at the tire bead are claimed to minimize the aero penalty inherent with wider tires.
Well, that's really not correct that there's an inherent drag increase with wider tires.
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