What is the speed corresponding to the letters on tires?
1 Answers
Tire letters J-Y represent speeds of 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 240, 270, and 300 kilometers per hour, while Z represents speeds above 240 kilometers per hour. Below is an introduction to car tires: 1. Definition of tires: Car tires are one of the important components of a vehicle. They directly contact the road surface and, together with the car suspension, help to absorb shocks during driving, ensuring good ride comfort and smoothness. They also ensure good adhesion between the wheels and the road surface, improving the vehicle's traction, braking, and off-road capability. 2. Effects of low tire pressure: Tire pressure is crucial for tires; both too high and too low pressure will shorten their lifespan. Low pressure increases tire deformation, leading to cracks on the tire sidewalls and causing flexing movements, which generate excessive heat, accelerating rubber aging, fatigue of the cord layers, and breakage of the cords. Low pressure also increases the tire's contact area with the road, accelerating wear on the tire shoulders. 3. Effects of high tire pressure: High pressure causes excessive stretching and deformation of the tire cords, reducing the tire's elasticity and increasing the load on the vehicle during driving. In case of impact, it can lead to internal cracks or blowouts. Additionally, high pressure accelerates wear on the tire tread and reduces its resistance to punctures.
