20555R16

205/55R16 is a standard passenger car tire size designation that describes width, profile, construction, and wheel fitting. The first number, 205, is the tire width in millimeters. The 55 is the aspect ratio, indicating the sidewall height is 55 percent of the width. The R denotes radial construction, and 16 is the wheel diameter in inches. This size is commonly fitted to compact and mid-size cars, and appears on a wide range of sedans and some crossovers.

Technically, a 205/55R16 tire has a section width of about 205 mm and a sidewall height of roughly 112.8 mm (55 percent of 205). The approximate overall diameter is about 631–635 mm, giving a circumference near 1.98 meters. Actual dimensions vary slightly by tire model, due to tread design and manufacturing tolerances. Sidewall height in this size offers a balance between ride comfort and steering response.

Performance and suitability depend on the specific tire model. In general, 205/55R16 tires provide a blend of ride quality and handling appropriate for many everyday vehicles. Shorter sidewalls can enhance steering feel but may transmit more road irregularities than taller profiles; tread pattern and rubber compound largely determine grip, wear, and noise. They are available in all-season, summer, and winter variants, with varying wet and snow performance.

When replacing, it is essential to match the wheel size (16 inches) and select a tire with an appropriate load index and speed rating for the vehicle. Always follow the vehicle manufacturer’s recommendations and maintain correct inflation pressures for optimal safety, performance, and efficiency.