Originally Posted by
jakub.ner
pm124 is the Birdy as 16" wheeled bike? This is what I assumed. Looked at three Web sites and the specs didn't say the wheel size.
Its best to go by rim sizes when comparing wheels. The wheel OD will depend on the tire size you mount on it.
The Birdy has a 355mm (approx 14") rim. (eg with a 1.5" tire it will be 17").
Most nominal 20" bikes have 405 mm (approx 16") rims so with with 1.5" tires they are 19" OD.
The Birdy and the Swift are both nice to ride but the Birdy is more comfortable on rough roads and folds quickly to a much more compact size.
David