maybe 17" was to keep the seat height down to earth?
maybe 17" because most 17" tires are DOT and lots of 18" are not DOT?
I am just glad I got the 21" front wheel. Most ADV bikes are doing small front wheels as well.
As soon as I test rode my F800, I knew this was the bike for me because of the way a 21" handles.
2000 KTM LC4 640 E