Thread: Type of tyre
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Old 04-21-13 | 02:34 PM
  #6  
fietsbob
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Joined: Jun 2010
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From: NW,Oregon Coast

Bikes: 8

The ETRO (metric) number is the disambiguation 559-50 is Mountain Bike 26"x2".. other numbers is Not.

drop some white paint on the street, ride through it, (dog poo, may do ,and already be there.)
then measure the distance between the marks, on the street or sidewalk ,
those being the actual circumference of the rolling wheel with you sitting on it.
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