10 inch (10") air tire, 60/70-6.5 (sometimes casually called 10x2.50 because of the associated innertube and solid tire code), pneumatic. Measuring 9.05in (23cm) outer diameter and 6.5in (16.5cm) inner diameter, this tire is commonly referred to as both a "9 inch tire" and a "10 inch tire". Direct replacement for SHOK Scooters Proton kick scooter (years 2021-2022) as well as many other brands and models such as Segway Ninebot and Xiaomi.