What does the tire code 165/70r13c mean?

[LaGemma]

The 'C' in tire code 165/70r13c indicates a maximum speed of 60 km/h. '165' represents the tire width in millimeters (165mm), '70' is the aspect ratio, 'R' stands for radial tire, and '13' denotes the rim size (13-inch). Meaning of tire size codes: Tire types follow international standard codes, expressed in millimeters for section width and aspect ratio percentage. These are followed by tire type code, rim diameter (in inches), load index (permissible load capacity code), and permissible speed code. How to check tire specifications: Original tire sizes can be found in the owner's manual, on the left front door frame, storage compartment door, or fuel filler cap. The tire specification information can also be found on the sidewall of existing tires. Important considerations for car tires: Regularly check tire pressure, generally maintaining around 2.5 bar; When changing tire size or width, be sure to register with the vehicle management office, otherwise it may affect annual vehicle inspections; It's advisable to rotate front and rear tires approximately every 40,000 kilometers to balance wear; Replace tires when surface wear reaches the triangle indicator mark to prevent safety hazards; After replacing or repairing tires, perform wheel alignment and balancing to prevent abnormal vibrations during high-speed driving; Avoid driving at high speeds over potholes to prevent tire blowouts.