Is 3.00 the same as 300 in Tyre Size?

10kovako · Borekit Bruiser Joined: 10 Apr 2018 Karma :

Hi all! I have an old CD200 with current tyres of 3.00 - 17. On wemoto the replacement tyre says it is 300 - 17 in size. Is this the same? Other tyre manufacturers also sell 300 - 17 tyres that I'm interested in, and I'm just making sure they'll fit.

Many thanks!
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Zen Dog · World Chat Champion Joined: 11 Aug 2004 Karma :

3.00 is probably inches (like bicycle tyres) if they're old. 300 is likely to be mm (and much wider). Have you got a link to the wemoto tyre you're considering?

As an example, Metzeler sell a front tyre for classic bikes, the ME22. It lists the tyre sizes in the format you're expecting, like this - https://www.metzeler.com/en-gb/catalogue/product/me-22

This isn't a recommendation by the way, I've never tried them.
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xX-Alex-Xx · World Chat Champion Joined: 12 Sep 2019 Karma :

Hayabusas with 300 section back tyres look stupid. I can't imagine what a CD200 would look like with one.
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WD Forte · World Chat Champion Joined: 17 Jun 2010 Karma :

Yep, dems inches
3.00 or 300 = 3" and is the width at the rim
300mm is about 12 inches

( I could insert a grossly tasteless comment on wanting a 12 incher but
stuck with 3 incher but this is BCF, we never do that sort of thing here)

Tyre sizes can be odd and confusing in that old imperial measurements are still often used and mixed with newer metric ones

Go figure
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A100man · World Chat Champion Joined: 19 Aug 2013 Karma :

xX-Alex-Xx · World Chat Champion Joined: 12 Sep 2019 Karma :

Nobby the Bastard · Harley Gaydar Joined: 16 Aug 2013 Karma :

Don't forget measure height of tyre as a ratio of the width.

It's not just the uk though. Do you really think tyres are made specially for the uk?
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Ste · Not Work Safe Joined: 01 Sep 2002 Karma :

Bhud · World Chat Champion Joined: 11 Oct 2018 Karma :

blurredman · World Chat Champion Joined: 18 Sep 2010 Karma :

yes. I can't even think of the last time I bought a motorcycle tyre that wasn't inches.
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