How to Read Tire Specs: A Comprehensive Guide

The story goes that Mr. Ba, the owner of a Dongfeng tarp truck running the Hanoi – Lao Cai route, one day decided to upgrade his beloved vehicle with a brand new set of tires. Thinking bigger tires meant better grip, Mr. Ba excitedly went to a truck parts store on Tam Trinh Street, Hoang Mai District, and asked for the largest size available. Back home, after installing the new tires, Mr. Ba was horrified to find the wheels rubbing against the chassis every time he turned the steering wheel. It turned out he hadn’t checked the tire specifications before purchasing, leading to a costly and frustrating mistake.

Mr. Ba’s story reminds us of the importance of understanding how to read tire specifications. So, how do you decipher those cryptic numbers and letters on the sidewall? Let’s explore with Hanoi Trucks!

Tire Specifications: Your Tire’s “Resume”

1. Tire Size:

Example: 195/65R15

• 195: Tire width (in millimeters)
• 65: Aspect ratio (the ratio of the tire’s sidewall height to its width, expressed as a percentage)
• R: Tire construction (Radial – steel belts arranged radially)
• 15: Wheel diameter (in inches)

Note: Choosing the right tire size for your vehicle is crucial. Oversized tires can rub against the wheel well, while undersized tires reduce load capacity.

Car tire size 195/65R15

2. Load Index:

Example: 91

This number indicates the maximum weight a tire can carry. Refer to a load index chart for the corresponding weight capacity.

3. Speed Rating:

Example: H

This letter represents the maximum speed a tire can safely sustain. Similar to the load index, you can consult a speed rating chart for the specific meaning.

4. Other Information:

Besides the basic parameters, the tire sidewall may also display other information such as:

• Manufacturer: Bridgestone, Michelin, Goodyear, etc.
• Tire Type: Passenger car tire, truck tire, off-road tire, etc.
• Date of Manufacture: Represented by four digits, for example, 2223 means the tire was manufactured in the 22nd week of 2023.

Choosing the Right Tires: “Good Shoes Take You Good Places”

Choosing the right tires not only ensures the safety of yourself and your passengers but also directly impacts the lifespan of your vehicle. Here are some tips when buying tires:

• Choose tires with the correct size for your vehicle. Consult the owner’s manual or seek advice from experts at reputable dealerships like Hanoi Trucks.
• Pay attention to the load index and speed rating, ensuring they meet your usage requirements.
• Choose reputable tire brands known for quality, avoiding counterfeit or substandard products.
• Thoroughly inspect the condition of the tires before purchasing, especially used tires.