UCI tire width

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Permalink Reply by MM on September 16, 2010 at 7:47pm

You racing pro? If not, don't stress about it. You can always argue that the size printed on the tire should be the final word. I highly doubt that any USAC officials are going to be at races with vernier calipers.

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Permalink Reply by Eric Colton on September 16, 2010 at 7:50pm

Yah, I race UCI. Not too stressed, this weekend will prove what their plans are...

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Permalink Reply by Joseph Davis on September 16, 2010 at 8:06pm

The Exact rule from the UCI Rule book is:

"TITLE 1
1.3.018 Wheels of the bicycle may vary in diameter between 70 cm maximum and 55 cm minimum, including the tire.
For the cyclo-cross bicycle the width of the tire (MEASURED BETWEEN THE WIDEST PARTS) shall not exceed 33mm and it may not incorporate any form of spike or stud."

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Permalink Reply by Rockin1Cog on September 16, 2010 at 10:01pm

I wouldn't sweat it. It's what it measures, not what it says on the tire. I don't see the UCI going after anyone unless it's at the elite level and something is suspect.

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Permalink Reply by Ryan Malinchak on September 27, 2010 at 9:52am

At the Ellison Park UCI race here in NY yesterday they had an official with a little welded jig that slid over the tires. They were checking all of our wheels and bikes in the pit. As long as the jig fit over the tire it was ok. I'll be curious to see what they have in Gloucester this weekend.

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Permalink Reply by Eric Colton on September 27, 2010 at 9:57am

yah, i raced starcrossed and rad racing GP last weekend, they had a set of calipers pre-set to ~33mm they checked everyone's front tire during callups, didn't see any DQ's

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Permalink Reply by Katsu Tanda on September 27, 2010 at 7:32pm

I took a piece of plastic and cut a 33mm wide slot it it. Easy to measure just in case.

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