215/55R17 tire size
A 215/55R17 tire stands 26.31 inches tall overall, on a 17-inch wheel, with a 118.3 mm sidewall and 215 mm of tread across. It turns roughly 767 times per mile.
- Overall diameter
- 26.31″
- 668.3 mm
- Sidewall height
- 118.3 mm
- 55% of 215 mm
- Circumference
- 82.7″
- 2,100 mm
- Revs per mile
- 767
- 476 per km
Reading the number
215 / 55 R 17 │ │ └─ rim diameter, 17 inches │ └──── aspect ratio, sidewall is 55% of width └──────── tread width, 215 mm sidewall = 215 × 0.55 = 118.25 mm diameter = (17 × 25.4) + (2 × 118.25) = 668.3 mm
Sizes that can replace 215/55R17
One rim step away, sorted by how close the rolling diameter stays.
Questions
›What does 215/55R17 mean?
215 is the tread width in millimetres. 55 is the aspect ratio, so the sidewall is 55% of 215 mm, or 118.3 mm. R means radial construction, and 17 is the wheel diameter in inches.
›How tall is a 215/55R17 tire?
26.31 inches, or 668.3 mm overall. That is the 17-inch rim plus a 118.3 mm sidewall at the top and another at the bottom.
›How many revolutions per mile does 215/55R17 do?
About 767 revolutions per mile, from a rolling circumference of 82.7 inches. Speedometers and odometers are calibrated against this figure, which is why changing size shifts both.
›What tires can replace 215/55R17?
Sizes within 3% of its rolling diameter and one rim step away, such as 235/45R18, 215/60R16, 245/45R18. Each is compared in full below.
Comparing against a size not listed? Open the calculator.