165/55R14 tire size
165/55R14 is a metric size: 21.1" tall, 6.5" wide, on a 14" rim — about a 21x6.50R14. The sidewall is 3.6" and the tire turns 954 times per mile.
165/55R14 specs
| Overall diameter (height) | 21.15" · 537 mm |
|---|---|
| Section width | 6.50" · 165 mm |
| Sidewall height | 3.57" · 91 mm (55% of width) |
| Rim diameter | 14" |
| Circumference | 66.43" · 1.687 m |
| Revolutions per mile | 954 (593 per km) |
| Inch (flotation) equivalent | 21x6.50R14 |
Try another size against 165/55R14
Questions
What size is 165/55R14 in inches?
165/55R14 is about 21.1" tall and 6.5" wide on a 14-inch rim — roughly a 21x6.50R14 in inch sizing.
What does 165/55R14 mean?
165 mm section width, sidewall 55% of the width (3.57"), radial construction, 14-inch rim.
What tire sizes are equivalent to 165/55R14?
No other common size on a 14" rim comes within 3% of this diameter.
How many revolutions per mile does a 165/55R14 tire make?
About 954 revolutions per mile (circumference 66.4").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.