at Bike Friday, made in Oregon, you can get a Gates belt drive option with either 20" 406 or 451, on the NWT Silk.

Or the new PakIt. Brompton type, 349 high pressure 16".. They, made in several sizes and offering more options,..

There is another 16" tire smaller 305 rim, fatter lower pressure tire , common on Asian folding bikes and kids bikes..

[have a BF Tikit, and a Brompton, 16", and a BF Pocket Llama 20", all use Chain Drives..]






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