What is the speed rating of a tire?
1 Answers
The letters corresponding to the speed rating of a tire represent the certified speed grades from 4.8 km/h to 300 km/h. J—Z are the letters corresponding to the speed ratings of radial tires, with J—Y representing 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 240, 270, and 300 km/h, while Z represents speeds above 240 km/h. The following factors affect the lifespan of a tire: 1. Tire load: The greater the vehicle load, the shorter the tire lifespan. 2. Tire temperature: During driving, tires experience tension, compression, and friction, leading to an increase in tire temperature. Excessively high temperatures can accelerate tire wear and even cause blowouts. 3. Road conditions: Vehicles driving on gravel roads or poor road conditions for extended periods will experience reduced tire lifespan.