Originally Posted by
mlask
I see, thank you. I've zoomed the image though - and indeed these are 47-406 tires. Impressive.
The fsIr Spin is an old design, not available anymore,.
Many more recent folding bikes with ETRTO406 tires accept tires wider than 47mm: Bike Friday's from 55mm with fenders to 71mm without fenders, Brompton G-line 55mm with fenders...