Tyre Sizes: What Does it Mean?
Choosing the Right Tyres for Your Vehicle
Understanding Tyre Sizes
Tyre size is one of the key factors to consider when selecting new tyres.
Here’s how to read a tyre’s size on the sidewall:
(A) Tyre Width: Measured from sidewall to sidewall in millimetres (e.g., 205 mm).
(B) Aspect Ratio: The ratio of the tyre’s height to its width (e.g., 55%).
(B) Construction: Refers to the tyre’s internal structure (R for Radial, B for Bias).
(C) Rim Diameter: The wheel diameter in inches (e.g., 16”).
(D) Load Index: Indicates the tyre’s load-carrying capacity (e.g., index 91).
(E) Speed Rating: Specifies the maximum service speed (e.g., V).
Importance of Expert Guidance
Understanding these technical details can be challenging. At Zam Zam Tyres, our specialists are available to guide you through the process, ensuring that you select the right tyres for your vehicle’s safety and performance.
Tyre Width and Aspect Ratio
Tyre width and aspect ratio are critical measurements for proper fit and performance. For instance, a tyre marked 205/55 has a width of 205 mm and an aspect ratio of 55%, meaning the sidewall height is 55% of the tyre’s width.
Tyre Construction and Wheel Diameter
The construction type plays a significant role in tyre performance:
Radial Construction (R): Modern radial technology offers improved fuel efficiency and longer tread life.
The wheel diameter (e.g., R17) must exactly match your wheel size to ensure a proper fit.
Reading Maximum Load and Speed Rating
The load index (e.g., 91) and speed rating (e.g., V) on the tyre sidewall indicate the maximum load capacity and speed that the tyre can handle. At Zam Zam Tyres, we will help you choose tyres based on these important ratings.
Identifying Tyre Brand and Range
The tyre brand and range are clearly marked on the sidewall. At Zam Zam Tyres, we offer a broad selection of trusted tyre brands to meet your driving needs.
