Our Folding bike, micro bike 20 inch mountain bike tire upgrade has been tested and improves the usage of the micro bike to the level of normal size mountain bikes with 26 inch tires.
Our experience with off airport landings and remote landing strips has shown us the need for a mountain bike tire to ride on dirt and gravel back country roads that your micro bike will encounter. This option allows
the ride comfort and control of a normal sized mountain bike 26 inch or larger tire gives you.
In the picture comparing the 20 inch to the 26 inch tire you can see the 2.125 inch width of both tires is the same. You get the comfort of a full size bike with the smaller micro bike size which fits more compactly into the aircraft , RV or auto.
You can see the web site for more details and ordering. https://kaneklassics.com/montague-bikes/folding-bike-micro-bike-fits-airplane-rv-car/