Tires are an important part of your car, and knowing how to read tire numbers can help you make an informed decision when it comes to buying new tires. This guide will teach you how to read tire numbers, so you can make sure you get the right tires for your car.
What Are Tire Numbers?
Tire numbers are the numbers printed on the sidewall of your tire. They provide valuable information about your tire, including its size, load capacity, and speed rating. Understanding these numbers can help you make sure you get the right tire for your car.
Step 1: Check the Manufacturer’s Mark
The first thing you should look for when deciphering tire numbers is the manufacturer’s mark. This is typically a three-letter code that indicates the manufacturer of the tire. It is typically located at the very beginning of the tire number. Once you have identified the manufacturer, you can look up more information about the tire online.
Step 2: Locate the Tire Size
The next thing you should look for is the tire size, which is typically indicated by a three- or four-digit number. This number indicates the width, aspect ratio, and rim size of the tire. The width is typically measured in millimeters, while the aspect ratio is the ratio of the sidewall height to the width. The rim size is typically measured in inches.
Step 3: Find the Load Index and Speed Rating
The load index and speed rating are typically indicated by two numbers after the tire size. The load index indicates the maximum load capacity of the tire, while the speed rating indicates the maximum speed at which the tire can safely be driven. The load index is typically measured in kilograms, while the speed rating is measured in miles per hour.
Step 4: Look for Special Markings
Some tires may have special markings that indicate additional features. For example, a “Z” may indicate that the tire is designed for high-speed driving, while an “R” may indicate that the tire is designed for off-road use. If you see any special markings, make sure you look them up to see what they mean.
Step 5: Check the Date Code
Finally, you should check the date code, which is typically a four-digit number near the end of the tire number. This number indicates when the tire was manufactured, with the first two digits indicating the week and the last two digits indicating the year. This is important to know, as tires older than six years old should be replaced.
Conclusion
Reading tire numbers can help you make sure you get the right tires for your car. To read tire numbers, start by looking for the manufacturer’s code and then locate the tire size. Then, look for the load index and speed rating, and check for any special markings. Finally, make sure to check the date code to make sure the tires are not too old.