Numbers on Tyres

nonnac85
nonnac85 Posts: 1,608
edited August 2008 in MTB beginners
Having looked around on t'internet I have seen some people say that 700c tyres ARE the same as 26" tyres and other people say they are NOT.
Now I am confused :?
Can anyone help?!
Ta

(my bike currently has 26" x 1.95" tyres)
My Website - Trail Centre info for the UK: MTB Trail Time

Comments

  • Andy B
    Andy B Posts: 8,115
    http://www.ctc.org.uk/DesktopDefault.aspx?TabID=3802
    2385861000_d125abe796_m.jpg
  • nonnac85
    nonnac85 Posts: 1,608
    I cant find my tyres on that chart.

    26x1.9 is on there but not 26x1.95

    Does anyone know yes or no whether my tyres are the same as 700c?
    Thanks
    My Website - Trail Centre info for the UK: MTB Trail Time
  • Andy B
    Andy B Posts: 8,115
    They are not.

    You need to look at the ISO numbers on tyres, the 3 digit number is the bead diameter of the rim 559mm in the case of a 26" tyre, the 2 digit number is the cross section of the tyre, eg 50-559 is approx a 26x1.9

    A 700c tyre has an ISO of xx-622, meaning a bead diameter of 622mm.

    it's all in there if you read the article.
    2385861000_d125abe796_m.jpg
  • europeandy
    europeandy Posts: 118
    No, 700c are road bike tyres as far as I know.
  • Andy B
    Andy B Posts: 8,115
    europeandy wrote:
    No, 700c are road bike tyres as far as I know.
    Also Hybrid & 29" MTB tyres If you mean 622mm bead tyres.
    2385861000_d125abe796_m.jpg
  • nonnac85
    nonnac85 Posts: 1,608
    Thanks - will see if I can find the ISO number
    My Website - Trail Centre info for the UK: MTB Trail Time

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