Quick: how do you measure kids' bike wheels?

[Agency_Scum]

Is it across the rim diametre or wheel and tyre diametre please?

 

[Bike Hoarder]

Wheel size doesn't physically correspond with marked size. :?

 

[retrojon]

If you don't have a tyre, and therefore cannot read the size off of it, I would measure the approximate bead seat diameter.

You can then compare that measurement with the table halfway down this page:

http://www.sheldonbrown.com/tire-sizing.html

 

[Agency_Scum]

Got it! Cheers all! Thanks for replying by text.

MERRY CHRISTMAS!