The thickness of a tire sidewall is typically measured in millimeters (mm) and is referred to as the aspect ratio.
What is Aspect Ratio?
The aspect ratio is the ratio of the tire's sidewall height to its tread width. For example, a tire with an aspect ratio of 55 means that the sidewall height is 55% of the tread width.
How to Find Tire Sidewall Thickness
You can find the tire sidewall thickness on the tire's sidewall. The aspect ratio is usually listed alongside the tire's size, for example, "225/55R17". In this example, the aspect ratio is 55, which means the sidewall height is 55% of the tread width, which is 225mm.
Importance of Sidewall Thickness
The sidewall thickness affects several aspects of a tire's performance, including:
- Ride comfort: A thicker sidewall provides a softer ride, absorbing bumps and imperfections in the road surface.
- Handling: A thinner sidewall provides better handling and responsiveness, but it also makes the ride harsher.
- Fuel efficiency: A thicker sidewall can increase rolling resistance, which can reduce fuel efficiency.
Choosing the Right Sidewall Thickness
The best sidewall thickness for your vehicle depends on your driving style and priorities. If you prioritize ride comfort, you may want to choose a tire with a thicker sidewall. If you prioritize handling and performance, you may want to choose a tire with a thinner sidewall.
