There have been several discussions about this. Last time I checked there were no 21" tires for all season or winter use for the Stevio QV. That is still the case. When I checked a month or so ago, there were all season tires for 20", not that is not the case. I was told back then they only had one set left, apparently they are gone. All they have is a 20" Scorpion which I guess I any of us could go with. Here is a link to rims for about 3K. Note I selected standard brakes.