What Do the Yellow and Red Dots on Tires Mean?

1 Answers
Brian
07/25/25 1:15pm
Tires with a solid red dot indicate the position of maximum longitudinal vibration on the tire, meaning this spot is the heaviest, or in technical terms, the center of gravity. During rotation, tires generate vibration, and this spot is where the vibration is most pronounced. The hollow yellow dot is the opposite of the solid red dot, representing the position of minimum longitudinal vibration, meaning this spot is the lightest, known as the tire's light point. Below are some precautions for tire installation: 1. Align the valve with the heaviest point: A car's wheel consists of three parts—the tire, the rim, and the valve. The valve should be installed on the rim first, and it should align with the rim's heaviest point. 2. Align the yellow mark with the heaviest point: When assembling the tire, the position marked with yellow on the tire should correspond to the heaviest point on the rim to achieve better dynamic balance.
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