Or simple to check your alignment, try the string test.
That is where I said there is NO point of reference to judge by on these scoots. They may indeed be parallel (front to rear) but the square to ground may be off.
I'm not trying to be dramatic or anything.... Just stating what I have found on all these scooters.
Naughty Lee... I assume you meant the rear tire. That's where the OP's issue is. That's where my problems always are/ were as well.
Something else that comes to mind are the red or green dots they always place on a tire from the factory. Red dot means the heavy spot or side of the tire, and the dot should be installed opposite the valve stem, and a green dot is the lighter side that should mount on the valve stem side. Manufactures have not gotten together yet on this one, and most installers are unaware of the dots meanings. That makes balancing a "catch up" game instead of maybe not even being needed.