Originally Posted by KG6BWS
Biggest distinction I see between a motorcycle and a scooter is footpegs vs the "floor board" of most scooters. The C90 has a sort of "step through" design but it has footpegs, where almost every scooter Ive ever seen has that little "floor board" kind of space between the seat and front wheel.
ALL: That plus wheel size does it for me. 12 inch wheels make me start calling the stuff a scooter. Any wheel small enough to make me want to dodge the odd brick, curb, and nearly every pothole makes me think scooter. Also, engine placement under the seat makes me think scooter. There are a bunch of factors when combined make think scooter. The more factors, the more scooter. If it is so small that riding it standing up is not a good option unless you are a kid, it might be a scooter.