What Do the Red and Yellow Dots on Tires Represent?

[VanKathryn]

The red and yellow dots on tires represent the following: 1. The solid red dot indicates the position of maximum longitudinal vibration on the tire, meaning this is the heaviest spot, referred to as the center of gravity in technical terms. 2. The hollow yellow dot is the opposite of the solid red dot, indicating the position of minimum longitudinal vibration on the tire, meaning this is the lightest spot, known as the tire's light point. Below is additional information about wheel hubs: 1. A wheel is composed of three parts: the hub, the valve, and the tire. The hub has its own 'heavy point' and 'light point,' similar to the tire. 2. By aligning the hub's heaviest point with its lightest point, they complement each other, helping to balance the wheel's overall load-bearing tendency. This enhances the driver's comfort and achieves superior balance, thereby increasing safety.