205/55R16 tire size
A 205/55R16 tire stands 24.88 inches tall overall, on a 16-inch wheel, with a 112.8 mm sidewall and 205 mm of tread across. It turns roughly 811 times per mile.
- Overall diameter
- 24.88″
- 631.9 mm
- Sidewall height
- 112.8 mm
- 55% of 205 mm
- Circumference
- 78.2″
- 1,985 mm
- Revs per mile
- 811
- 504 per km
Reading the number
205 / 55 R 16 │ │ └─ rim diameter, 16 inches │ └──── aspect ratio, sidewall is 55% of width └──────── tread width, 205 mm sidewall = 205 × 0.55 = 112.75 mm diameter = (16 × 25.4) + (2 × 112.75) = 631.9 mm
Sizes that can replace 205/55R16
One rim step away, sorted by how close the rolling diameter stays.
Questions
›What does 205/55R16 mean?
205 is the tread width in millimetres. 55 is the aspect ratio, so the sidewall is 55% of 205 mm, or 112.8 mm. R means radial construction, and 16 is the wheel diameter in inches.
›How tall is a 205/55R16 tire?
24.88 inches, or 631.9 mm overall. That is the 16-inch rim plus a 112.8 mm sidewall at the top and another at the bottom.
›How many revolutions per mile does 205/55R16 do?
About 811 revolutions per mile, from a rolling circumference of 78.2 inches. Speedometers and odometers are calibrated against this figure, which is why changing size shifts both.
›What tires can replace 205/55R16?
Sizes within 3% of its rolling diameter and one rim step away, such as 225/45R17, 195/65R15, 205/60R16. Each is compared in full below.
Comparing against a size not listed? Open the calculator.