Understanding Tyre Size and Specifications

Before you start shopping for tyres, it’s essential to understand the tyre size and specifications for your vehicle. Every vehicle has a recommended tyre size that is compatible with its design, and choosing the right size is crucial for optimal safety and performance.

You can find the recommended tyre size for your vehicle in the owner’s manual or on the tyre placard, usually located on the driver’s side door frame or inside the fuel door. The tyre size is expressed in a series of numbers and letters, such as 205/55R16 91V.

Let’s break down this example:

• 205: This is the width of the tyre in millimetres, measured from sidewall to sidewall.
• 55: This is the aspect ratio, which represents the height of the tyre sidewall as a percentage of the width. In this case, the sidewall height is 55% of the width (205 mm).
• R: This indicates that the tyre has a radial construction, which is the most common type of tyre.
• 16: This is the diameter of the wheel in inches that the tyre fits.
• 91: This is the load index, indicating how much weight the tyre can carry.
• V: This is the speed rating, which tells you the maximum speed the tyre can handle safely.

Choosing the correct size is important because tyres that are too big or too small can affect the handling, ride comfort, and fuel efficiency of your vehicle.