What does the 175/70r14c tire mean?
2 Answers
Automobile tire 175/75/R14C indicates the specifications of the tire. Among them, 175 represents that the cross-sectional width of the automobile tire is 175mm; 75 represents that the aspect ratio of the tire is 75%; R represents that the tire has a radial structure; 14 represents that the applicable rim diameter of the tire is 14 inches; C indicates that the tire is a reinforced tire. Tire letters have special meanings: "X" indicates a high-pressure tire; "C" indicates a reinforced type; "B" indicates a bias-ply tire; "-" indicates a 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. Additional information: Some tires have arrows or the word OUTERSIDE marked on the sidewall, indicating the rotation direction of the tire. If a small umbrella symbol is painted on the sidewall, it indicates that this type of tire is suitable for driving in rainy or slippery conditions. The DOT mark indicates that the tire has passed the certification of the U.S. and Canadian transportation departments. A 4-digit number usually follows the DOT mark, and unlike other text, it is not molded early but is pressed onto the tire later, such as (1805), which indicates the production date of the tire. 05 stands for 2005, and 18 stands for the 18th week.
Last time I changed tires, I specifically researched the meaning of 175/70R14C. The 175 represents the tire width of 175 millimeters, which determines the contact area with the ground—the larger the number, the wider the tire. The 70 is the aspect ratio, meaning the sidewall height is 70% of the width; a higher ratio provides a more comfortable ride. The R in the middle stands for radial, which is the structure most tires use today. The 14 refers to the rim size of 14 inches—when buying tires, the rim must match this number. Finally, the C stands for commercial use, meaning it's suitable for light trucks or vans, but not ideal for regular passenger cars. My delivery van uses these tires—they're sturdier than regular tires but ride a bit rougher. Always check these parameters when changing tires, as they affect both safety and fuel efficiency.
