A Comprehensive Guide for Mastering Tire Size Reading

[Photo Credit: Free Stock Photos]


Mounting the right tires on your vehicle is vital to the overall performance and safety of the vehicle. Understanding the tire codes and measurement is the most crucial thing is tire sizing. Thankfully, reading a tire size is pretty straightforward once you understand the format. Here are some tips to help you master tire size reading for your next purchase.

Understand the Format: A tire size typically consists of three main parts: width, aspect ratio, and rim diameter. For example, in the size P215/65R15, “215” is the width in millimeters, “65” is the aspect ratio (the sidewall height as a percentage of the width), and “15” is the rim diameter in inches.

Decode Speed Rating: Some tires also include a speed rating, denoted by a letter immediately after the size. This indicates the maximum speed the tire is designed to handle safely. For example, “R” indicates a maximum speed of 106 mph (170 km/h), while “H” indicates 130 mph (210 km/h).

Check Load Index: Another important factor is the load index, which indicates the maximum load capacity of the tire. This is usually found after the tire size. The higher the number, the higher the load capacity.

Understand Tire Type: If your tire size includes the letter “P” at the beginning, it indicates a tire for passenger vehicles. Other letters like “LT” indicate light truck tires, and “T” indicates temporary spare tires.

Consult Owner’s Manual: If you’re still unsure or have specific requirements for your vehicle, always refer to your owner’s manual or consult a professional for guidance. Everything you need to know about your vehicle, including the tire size would be found in your manual.

Visit for more


Leave a Reply

Your email address will not be published. Required fields are marked *

GIPHY App Key not set. Please check settings

What do you think?

Written by monsurat

Good Morning

Carbon Tax Protesters Force Temporary Traffic Redirection West of Calgary