Bike Forums - View Single Post - 25mm tires on Zipp 808's

07-02-09, 06:12 PM

#2

merlinextraligh

pan y agua

Join Date: Aug 2005

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Bikes: Willier Zero 7; Merlin Extralight; Calfee Dragonfly tandem, Calfee Adventure tandem; Cervelo P2; Motebecane Ti Fly 29er; Motebecanne Phantom Cross; Schwinn Paramount Track bike

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Waldo was quick and helpful with theanswer in the road thread, so I'm copying it here, so anyone interested will have it.

Quote:

Originally Posted by Waldo

Actually, as our clincher bead is governed by the ISO/ETRTO standard that dictates that a road racing rim be compatible with tires between 18-25 mm, those tires are just fine. The aero penalty is on the order of approximately 6 Watts, though that figure is affected by frame configuration on the rear wheel. Can you let me know where you got the info on tire compatibility and I will rectify the misstatement?

thanks for the info. It's on a sticker by the valve on the rims, not to use only 18-23mm tires, and not to exceed 125psi.

I believe these wheels were actually built in 2005 (based on some writing on the rim bed with a sharpie, if that helps.)

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