tire size conversion

[Schwinnspastic]

Trying to figure out a tire size That I think is 20x3 but in the picture I have all I can see is 78-406...anyone have a chart handy ?

Thanks
Mark

 

[CCR]

406mm is a standard 20" (decimal size tire/rim) according to sheldon brown

and 78mm is a hair over 3" (25.4mm to an inch, 3 inches would be 76.2mm)

id say your on the money :wink:


google for a ISO chart for more info

 

[Schwinnspastic]

Thanks for the confermation CCR ....ya know sometimes I get this brainfade , it sucks haveing CRS :lol: