Tyre Sidewall

A tyre's sidewall serves several important functions, and it also contains key information about the tyre.

Protection for Carcass: The sidewall acts as a protective layer for the tyre's carcass (the internal structure), shielding it from damage caused by various road hazards such as curbs, potholes, and debris.

Flexibility During Cornering: The sidewall's flexibility plays a crucial role in a tyre's ability to absorb shocks and provide a comfortable ride. It allows the tyre to adapt to uneven road surfaces and absorb lateral forces during cornering.

Information Markings: On the sidewall, you can find important information that helps you identify the tyre and understand its specifications. This information typically includes:

Tyre Type: Indicates whether it's a passenger car (P), light truck (LT), or other type.

Size: Provides details about the tyre's dimensions, including width, aspect ratio, and rim diameter (e.g., P215/65R16).

Load Index: A numerical code representing the tire's maximum load-carrying capacity.

Speed Rating: A letter indicating the maximum speed the tyre can safely handle.

Treadwear Rating: A three-digit number indicating the tyre's expected tread life compared to a reference tyre.

Traction Rating: A letter grade (A, B, C) indicating the tyre's ability to stop on wet pavement.

Temperature Rating: A letter grade (A, B, C) indicating the tyre's resistance to heat buildup.

DOT Code: A Department of Transportation code that includes the tyre's manufacturing location, date of manufacture, and other production details.

Manufacturer and Brand Name: The tyre's manufacturer and brand are usually prominently displayed.

Tread Pattern: Some tyres may have specific markings or labels related to their tread pattern or technology.

These markings are essential for selecting the right replacement tyre for your vehicle, ensuring it meets safety and performance requirements, and understanding its characteristics.