What does 91V and 91W mean on tires?
1 Answers
Tire markings 91V and 91W indicate the maximum speed they can sustain. Below are detailed explanations about tires: 1. Definition: A tire is a circular elastic rubber product mounted on various vehicles or machinery for ground rolling. Typically installed on metal rims, it supports the vehicle body, absorbs external shocks, ensures contact with the road surface, and maintains driving performance. Tires operate under complex and demanding conditions, enduring various deformations, loads, forces, and temperature extremes during use. Therefore, they must possess high load-bearing capacity, traction performance, and shock absorption. Additionally, they require excellent wear resistance, flexibility, low rolling resistance, and heat generation. Half of the world's rubber consumption is used in tire production, highlighting their significant rubber usage. 2. Primary Functions: Tires are one of the most critical components of a vehicle. Their main roles include supporting the vehicle's entire weight and bearing its load; transmitting traction and braking torque to ensure wheel-road adhesion; reducing and absorbing vibrations and impacts during driving to prevent severe vibrations and premature damage to vehicle parts; adapting to high-speed performance while minimizing noise for safety, handling stability, comfort, and fuel efficiency.
