How to Read the Data on Tires?
2 Answers
Locate the area on the car tire with numbers. Check it out. Tire specifications are usually represented by a set of numbers. The first number indicates the tire section width, and the latter indicates the rim diameter, in inches. Some tires also contain other letters or symbols. X stands for high-pressure tire; C stands for reinforced; B stands for bias tire; - stands for low-pressure tire. M and S are abbreviations for Mud and Snow in English, indicating that this type of tire is suitable for use on snowy, icy, and muddy roads.
When I first started learning to drive, I also found tire data quite complicated, but after driving for a while, I figured it out. For example, a size like P225/60R17: P stands for passenger car type, 225mm is the width, 60 is the aspect ratio meaning the sidewall height is 60% of the width, and R17 indicates a 17-inch rim diameter. These factors affect ride comfort and handling—higher aspect ratios mean less bumpiness but less agility in turns. A DOT code like 4321 means the tire was produced in the 43rd week of 2021, and it's best to avoid tires older than 4 years to prevent aging issues. A speed rating of H means a maximum of 190 km/h; choosing the wrong one can lead to loss of control at high speeds. I also pay attention to the load index—95 means it can bear 690 kg, which is crucial when fully loaded. Extra knowledge like a TREADWEAR rating above 400 means longer durability, and TRACTION ratings help ensure safety on wet or slippery roads. With these insights, I've driven safely for over a decade, and regular checks save a lot of trouble.
