Supermoto Tires Like Motorcycle for Stealthbomber?

[khanbaba]

I have 21 inch motorcycle rims. These are not the same size as regular motorycle rims so I cannot find supermoto tires for it, but does anyone know of a source where I can buy supermoto tires that will fit? Thanks

 

[Chalo]

https://www.amazon.com/DUNLOP-K180-Front-Tire-3-00-21/dp/B07V36JHFZ

 

[ganzey]

how are they different from "regular" moto rims?