R14 has many meanings. R-14 is a special ultra-low temperature refrigerant for scientific research refrigeration and medical refrigerant. R14 can also represent the tire type code. The following is a detailed introduction about R14: Ultra-low temperature refrigerant R14: Ultra-low temperature refrigerant R14. As a special ultra-low temperature refrigerant, R-14 is mainly used in low-temperature equipment (including scientific research refrigeration, medical refrigeration, etc.) This requires very low temperature. R14 is also an important component of ultra-low temperature refrigerants. R14 represents the automotive field: In the automotive and tire fields, R14 represents the tire model code, R represents the radial tire, and 14 represents the rim diameter, that is, the tire is suitable for 14-inch rims. Don't confuse hubs, rims and rims. The wheel hub is actually a connector, and its function is only to connect the wheel and the body.