How to Check the Correct Side of a Tire?
2 Answers
Identifying the correct side of a tire can be categorized into three scenarios: tires are generally divided into three types: unidirectional tires, symmetric tires, and asymmetric tires. 1. Identifying the correct side of a unidirectional tire: An arrow mark can be seen on the sidewall of the tire. During installation, the arrow should face forward. It is optimal to install the side with the production date facing outward. The arrow indicates the direction of wheel rotation, so the tire should be installed accordingly. 2. Identifying the correct side of a symmetric tire: The tread pattern is symmetric on both sides relative to the center of the tire, so there is no distinction during installation. Symmetric tires do not have a specific inside or outside, front or back. Generally, the side with the production date is installed facing outward. 3. Identifying the correct side of an asymmetric tire: The tread pattern is asymmetric on both sides relative to the center of the tire. One side of the tire will be marked with the word "outside," which should face outward during installation.
To check the correct orientation of tires, I usually look for markings on the sidewall. Each set of tires typically has labels like 'OUTSIDE' or arrow symbols indicating the installation direction, which must face outward. If there are no clear markings, I inspect the tread pattern—asymmetric designs have a specific outer side. If installed incorrectly, the tread will face inward, leading to poor water drainage. Last time I changed the tires myself, I overlooked this and noticed the car felt unstable in the rain, with uneven wear and faster wear on one side. Now, before every check, I squat down and walk around the car to ensure all tire markings face outward, while also feeling the tire pressure with my hand. This simple habit improves wet-road grip and saves on repair costs.