225/55R17 tire size
A 225/55R17 tire is 26.7 inches tall and 8.9 inches wide. Here are its full dimensions, what the numbers mean, and the sizes you can swap it for.
- Overall diameter
- 26.74″ (679 mm)
- Section width
- 8.86″ (225 mm)
- Sidewall height
- 4.87″ (124 mm)
- Wheel diameter
- 17″
- Circumference
- 84.0″
- Revolutions per mile
- 754
What 225/55R17 means
- 225: the tire is 225 mm (8.9 in) wide from sidewall to sidewall.
- 55: the sidewall is 55% of the width, 123.8 mm (4.87 in) tall.
- R: radial construction, used by almost every modern tire.
- 17: it fits a 17-inch wheel.
Overall diameter = 17 + 2 × 4.87 = 26.74 inches.
Sizes equivalent to 225/55R17
These sizes are within 3% of the overall diameter, the usual limit for swapping without speedometer problems.
| Size | Diameter | Difference | Speedometer at 60 mph |
|---|---|---|---|
| 245/40R19 | 26.7″ | -0.1% | 59.9 mph actual |
| 205/60R17 | 26.7″ | -0.2% | 59.9 mph actual |
| 245/45R18 | 26.7″ | -0.2% | 59.9 mph actual |
| 245/50R17 | 26.6″ | -0.4% | 59.8 mph actual |
| 225/50R18 | 26.9″ | +0.4% | 60.3 mph actual |
| 215/45R19 | 26.6″ | -0.5% | 59.7 mph actual |
| 205/55R18 | 26.9″ | +0.5% | 60.3 mph actual |
| 225/45R19 | 27.0″ | +0.9% | 60.5 mph actual |
| 215/50R18 | 26.5″ | -1.0% | 59.4 mph actual |
| 205/50R19 | 27.1″ | +1.2% | 60.7 mph actual |
Going a size taller? 215/60R17 is 27.2″ tall, 1.5% more than 225/55R17. Compare any two sizes in the tire size calculator.
See every common size side by side in the tire size chart.
Questions
What is 225/55R17 in inches?
A 225/55R17 tire is about 26.7 inches tall (679 mm) and 8.9 inches wide, on a 17-inch wheel. In flotation sizing that's roughly 26.7x8.9R17.
How tall is a 225/55R17 tire?
The overall diameter is 26.74 inches: the 17-inch wheel plus two 4.87-inch sidewalls. Actual tires vary by a few tenths of an inch between brands and models.
Can I put 235/55R17 instead of 225/55R17?
235/55R17 is 0.43 inches taller (1.6%) and 10 mm wider. That's within the usual 3% limit, but check that your wheel width is approved for it and that it clears the suspension.
How many revolutions per mile does a 225/55R17 make?
About 754 revolutions per mile, from a circumference of 84.0 inches.
