- Uneven wear: The different tire size will cause the car to sit at a different height on one side, which can lead to uneven wear on the tires.
- Poor handling: The different tire sizes can affect the handling of the car, making it more difficult to control.
- Increased risk of accidents: The different tire sizes can increase the risk of accidents, especially in wet or snowy conditions.
- Reduced fuel efficiency: Depending on the difference between the tires, it could change how the vehicles aerodynamics work and reduce the fuel efficiency.
For these reasons, it is important to replace all four tires at the same time with tires of the same size and ratio.