The tyre size 205/60 R16 is the most common size on the market, used for popular family cars like the Volkswagen Golf, Ford Focus, and Audi A3.  16-inch wheel diameter

The tyre size 205/55 R16 is the most common size on the market, used for popular family cars like the Volkswagen Golf, Ford Focus, and Audi A3. It refers to a tyre with a width of 205mm, a sidewall height that is 55% of that width, and a 16-inch wheel diameter