195/60R16 designates a tire 195 mm (7.7") wide with a sidewall 60% as tall as it is wide — about 117 mm (4.6") — mounted on a 16-inch wheel. That works out to an overall diameter of roughly 25.2", a circumference of about 79.2", and approximately 800 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.
Of the 8 195/60R16 tire models we track, the most common category is winter (3 models), followed by grand touring all-season (2) — a good indicator of the kind of vehicles and driving this size is designed for.