The tire size 195/55R15 (85H) indicates specific characteristics of a car tire. The number "195" signifies the width of the tire in millimeters, "55" is the aspect ratio representing the height as a percentage of the width. The "R" denotes radial construction, and "15" is the rim diameter in inches. The number "85" is the load index, meaning the tire can carry a maximum load of 515 kg. The letter "H" is the speed rating, indicating that the tire can handle a maximum speed of 130 mph. This tire is suitable for mid-sized vehicles.