622 x 18 rim how small a tyre can I go ?

bikehack
Posts: 14
Joined: Wed Oct 22, 2008 1:09 pm
Location: Newcastle NSW

622 x 18 rim how small a tyre can I go ?

Postby bikehack » Sun Nov 02, 2008 5:41 pm

Hi all

I have a 622x 18 rim . At the moment I am running a tyre 42-622 (700x 40c). I would like to run a 23 / 28 /32 mm tyre if I could. I have checked other threads here and link to Mr Browns site was helpful but had no info (that I could find) for a 18 rim ?
What do you guys (AT) gals recommend the minimum for my rim would be? Also I think the following question is rhetorical but I would need to change tubes too wouldn’t I?

Cheers all

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Matt_Matt
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Joined: Tue Aug 14, 2007 9:52 pm
Location: Mornington VIC

Postby Matt_Matt » Sun Nov 02, 2008 7:56 pm

Hi bikehack,

A 17mm rim will take a 25mm tyre with an issue, not to sure how safe it would be running a 23mm though.

Odd size rim, are there any other markings on it?


Matt

bikehack
Posts: 14
Joined: Wed Oct 22, 2008 1:09 pm
Location: Newcastle NSW

Postby bikehack » Sun Nov 02, 2008 8:46 pm

yeh hi Matt_Matt

the rim is an Alex adventurer spec sticker states

ETRTO 622X18 6061H-T6

cheers

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Matt_Matt
Posts: 1370
Joined: Tue Aug 14, 2007 9:52 pm
Location: Mornington VIC

Postby Matt_Matt » Sun Nov 02, 2008 9:06 pm

Looks like it is more likely to be 17.5mm so you shouldn't have any problems with a 25mm tyre.

http://www.alexrims.com/product_detail. ... at=4&id=93


Matt

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