Red and yellow dots on tires are used to indicate the tire's high and low spots.
High spots can cause vibration and noise while driving.
Low spots can cause uneven wear and affect handling.
Tire manufacturers use lasers to mark the dots during production.
The dots should be aligned with the valve stem during installation.
Ignoring the dots can lead to premature tire wear and affect safety.
Some tire shops offer road force balancing to address high spots.