What Causes the Car to Feel Unstable After Changing Tires?

[McBrayden]

There are two main reasons why a car may feel unstable after changing tires, as detailed below: 1. Replacing only one side of the tires can result in uneven grip between the left and right tires, leading to vehicle instability. When changing tires, it is generally advisable to ensure that the tires on both sides are of similar age and tread pattern. 2. Incorrect positioning of the red and yellow dots on the tire can disrupt the tire's balance. If the valve stem is not aligned with the yellow dot, the tire's force distribution may become unbalanced, causing discomfort while driving and increasing the risk of a blowout. This issue can also accelerate tire wear. Therefore, when changing tires, it is crucial to align the valve stem with the yellow dot.