Tire Safety involves alot of things... miles, weight, road conditions, weather,,, and the list goes on. When a tubless tire has a fracture extra care needs to be given in it being safe,,, remember you are riding on just two,,, if one fails at high speed (on a scooter i feel 45+),,, u do the math... in my veiw "which may be overlooked" ... Replace the tire... using a plug to patch a scooter tire is used to get you home... I know some are saying iv patch my tire and it was good for another 5000 miles... thats them,,, your life may depend on it...
another thought,,, just adding them little valve cap thingies "BLING" will though a tire out of balance... putting a tire on a scooter rim is not all that hard with proper tools,,, balancing a tire on the rim takes talent,,, and the right tool...
Scoot'in is more fun than beating up your sister, and it comes with a key!!!
I just experienced what Major Redneck described, ugh. Scary! Figured I'd toss in my $0.02. Don't use any kind of fix-a-flat or slime or goop or whatever. It will gunk up your rims something fierce! And sometimes it can make your tire slippery.
Slime will also make your tire unbalanced for the first few minutes until it re-distributes itself evenly, and add weight to your wheels. Two things you don't need. I've used it in ATVs before, where you wouldn't notice the slight balance issue or weight.