What is the size of a 909012 tire?
2 Answers
909012 tire size is: width 90mm, aspect ratio ninety percent, radial tire thickness 81mm, rim 12 inches. Tires are round elastic rubber products assembled on various vehicles or machinery for ground rolling. Usually mounted on metal rims, they can support the vehicle body, cushion external impacts, achieve contact with the road surface, and ensure the vehicle's driving performance. Tires are often used under complex and harsh conditions, enduring various deformations, loads, forces, and high and low temperature effects during driving, so they must have high load-bearing performance, traction performance, and cushioning performance.
I've changed this type of tire before. 909012 is actually a shorthand for 90/90-12. The first 90 represents the tire width of 90 millimeters. The middle 90 is the aspect ratio, meaning the tire height is 90% of the width, which calculates to approximately 81 millimeters in height. The last 12 refers to the rim diameter, which is 12 inches. This size is commonly found on small scooters or electric bikes, like those often used by food delivery riders. It's popular because of its compact size and wear resistance, making it particularly suitable for short urban commutes. When choosing tires, it's crucial to pay attention to these numbers—matching the width and rim size is most important, otherwise, it won't fit.
