Anyone know the diameter of 700x37 tires?

Discussion in 'Cycling Equipment' started by Joe West, Oct 9, 2004.

  1. Joe West

    Joe West New Member

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    Hi,

    The bike I am ordering is coming with Continental Top Touring 700x37 tires. I am trying to program a computer (before the bike arrives) and I need to know the rolling diameter of the tire inflated to normal pressure.

    I looked on Google and couldn't find any links to tire diameters.

    Does anyone either know the diameter or can anyone provide a link which might help provide me the data I need to program my computer?

    Kind Regards,

    Joe West
     
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  2. serenaslu

    serenaslu New Member

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    Circumference is going to be in the neighborhood of 2175mm, but a tire of that size is going to vary a fair amount depending on the rider weight as well as pressure.
     
  3. Joe West

    Joe West New Member

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    Thanks.

    That will give me a good starting point. I appreciate the help.

    Joe West
     
  4. closesupport

    closesupport Banned

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    I usually mark the tyre, mark the floor, roll the wheel until the tyre mark has made 1 complete revelusion then messure the distance the wheel has travelled.

    but i guess you don't have the wheel or bike yet to try this? :rolleyes:
     
  5. Joe West

    Joe West New Member

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    hehe... indeed you are correct. No bike yet; just trying to get everything ready while I'm waiting.

    Joe

     
  6. closesupport

    closesupport Banned

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    i'd be inclined to wait until it gets there, how long does it take to program a bike computer 10minutes plus installation..


    surely if you've waited so long you can wait extra 10minutes. since you'll have to fit it anyhow, at leaste you'll know it was right :)
     
  7. Doctor Morbius

    Doctor Morbius New Member

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    Mr. West, If you really want to be accurate, then hop on the bike with the appropriate tire pressure and then measure 1 complete revolution. Your body weight can slightly change the shape of the tire. It's probably not enough to fool with but for someone who is an engineer you may have a need to be as accurate as hell.

    Have someone help you with the chalk mark. Then measure that distance from the middle of one chalk mark to the middle of the other.
     
  8. Joe West

    Joe West New Member

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    Thanks! Once the bike gets here I'll do exactly that.

    Joe
     
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