Description The type of kick scooter tire you need depends on your riding style and location. If you roll across the pavement more than over the dirt trails, then you should be using a tire like our Kenda 12-1/2″x2-1/4″ kick scooter tire with street tread. Because using pneumatic tires means having good inner tubes, we offer this tire with the option of a matching inner tube. You can select the tire alone, or with a standard inner tube with a straight valve stem, or with a thicker heavy-duty thorn-resistant tube with a straight valve stem. Sometimes referred to as a 57-203/62-203, this size rubber is perfect for the Diggler Dirt Doggy and the Mongoose Expo Freestyle kick scooter riders who prefer the smoother ride of a sweet pneumatic street tread to the aggressive knobbiness of a dedicated mountain and dirt tire. In addition, it the tire that you want for a Trikke T12 Roadster. Specifications Brand: Kenda Size: 12-1/2″x2-1/4″ (57-203/62-20) Tread: K912-012