Tires Archives - Ferber's Tire & Auto Service

Finding and reading tire sizes may initially seem confusing, but it’s an important skill for any car owner or driver. The tire size is usually imprinted on the sidewall of the tire, and it follows a standardized format. Let’s break down how to find and read tire sizes:

The tire size is typically found on the sidewall of the tire. Look for a sequence of letters and numbers molded into the rubber. For mor information, in some vehicles, the manufacturer provides a tire placard, usually located on the driver’s side door jamb or inside the glove compartment. This placard contains essential information, including the recommended tire size.

When it comes to reading the tire size, it’s expressed in a standardized format, such as P215/60R16. Let’s break down each component:

Tire Type (e.g., P):

The first letter indicates the tire type. “P” stands for passenger tire, which is the most common type for regular cars. Other letters you might encounter include “LT” for light truck or “ST” for special trailer.

Tire Width (e.g., 215):

The three-digit number following the letter represents the tire width in millimeters. In this example, the tire is 215 millimeters wide.

Aspect Ratio (e.g., 60):

The two-digit number after the slash represents the aspect ratio, which is the ratio of the tire’s height to its width. In this example, the aspect ratio is 60, meaning the tire’s height is 60% of its width.

Construction Type (e.g., R):

The letter following the aspect ratio indicates the construction type. “R” stands for radial, which is the most common type. Radial tires have ply cords that run radially across the tire.

Wheel Diameter (e.g., 16):

The two-digit number after the construction type represents the diameter of the wheel in inches. In this example, the tire is designed for a 16-inch wheel.

To Recap. P215/60R16.

  • “P” for passenger tire.
  • “215” for the width in millimeters.
  • “60” for the aspect ratio.
  • “R” for radial construction.
  • “16” for the wheel diameter.

Load Index and Speed Rating:

Additional numbers and letters may indicate the tire’s load-carrying capacity and speed rating. These are important factors, especially if you are replacing tires and want to ensure they meet or exceed your vehicle’s specifications.

Understanding your tire size is essential when it comes to replacing or upgrading your tires. If you have any doubts or need assistance, consult your vehicle’s owner’s manual or ask a professional at an automotive service center for guidance. For service you can trust in Ashland and Fredericksburg, Virginia, call Ferber’s Tire and Auto!

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