245/55R17 tire size in inches
A 245/55R17 tire measures
27.6" tall × 9.6" wide
5.31" sidewall on a 17" wheel. 730 revolutions per mile.
245/55R17 means a tire 245 mm wide, with sidewalls 55% as tall as the tire is wide (135 mm), radial construction (R), for a 17 inch wheel.
245/55R17 specs
| Overall diameter (height) | 27.61 inches (701 mm) |
|---|---|
| Section width | 9.65 inches (245 mm) |
| Sidewall height | 5.31 inches (135 mm) |
| Wheel (rim) diameter | 17 inches |
| Circumference | 86.7 inches (2,203 mm) |
| Revolutions per mile | 730 |
| Revolutions per kilometer | 454 |
| Approximate rim width | 7.0" to 8.5" |
| In inches (flotation style) | 27.6x9.6R17 |
| Aspect ratio | 55% |
Calculated from the size. Real tires differ by brand, model and tread depth, typically by a few tenths of an inch.
Sizes that can replace 245/55R17 on a 17" wheel
These 17" sizes are within 3% of 245/55R17's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 225/60R17 | 27.63" | 8.86" | +0.1% | 60.0 mph | Compare |
| 205/65R17 | 27.49" | 8.07" | −0.4% | 59.7 mph | Compare |
| 195/70R17 | 27.75" | 7.68" | +0.5% | 60.3 mph | Compare |
| 295/45R17 | 27.45" | 11.61" | −0.6% | 59.7 mph | Compare |
| 265/50R17 | 27.43" | 10.43" | −0.6% | 59.6 mph | Compare |
| 305/45R17 | 27.81" | 12.01" | +0.7% | 60.4 mph | Compare |
| 275/50R17 | 27.83" | 10.83" | +0.8% | 60.5 mph | Compare |
| 185/75R17 | 27.93" | 7.28" | +1.1% | 60.7 mph | Compare |
| 215/65R17 | 28.00" | 8.46" | +1.4% | 60.9 mph | Compare |
| 185/70R17 | 27.20" | 7.28" | −1.5% | 59.1 mph | Compare |
| 235/55R17 | 27.18" | 9.25" | −1.6% | 59.1 mph | Compare |
| 255/55R17 | 28.04" | 10.04" | +1.6% | 60.9 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 285/25R22 | 22" | 27.61" | 0.0% | Compare |
| 305/40R18 | 18" | 27.61" | 0.0% | Compare |
| 295/50R16 | 16" | 27.61" | 0.0% | Compare |
| 215/45R20 | 20" | 27.62" | 0.0% | Compare |
| 335/25R21 | 21" | 27.59" | −0.1% | Compare |
| 275/35R20 | 20" | 27.58" | −0.1% | Compare |
| 245/60R16 | 16" | 27.57" | −0.1% | Compare |
| 245/50R18 | 18" | 27.65" | +0.1% | Compare |
| 185/80R16 | 16" | 27.65" | +0.2% | Compare |
| 265/65R14 | 14" | 27.56" | −0.2% | Compare |
| 275/40R19 | 19" | 27.66" | +0.2% | Compare |
| 235/30R22 | 22" | 27.55" | −0.2% | Compare |
One size up or down
- 235/55R17narrower: 27.2" × 9.3"
- 255/55R17wider: 28.0" × 10.0"
- 245/50R17lower profile: 26.6" × 9.6"
- 245/60R17taller sidewall: 28.6" × 9.6"
Compare 245/55R17 with another size
Questions
- How tall is a 245/55R17 tire?
- A 245/55R17 tire is 27.6 inches tall (701 mm), calculated from the size. It is 9.6 inches wide with 5.3 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 245/55R17 mean?
- 245/55R17 means a tire 245 mm wide, with sidewalls 55% as tall as the tire is wide (135 mm), radial construction (R), for a 17 inch wheel.
- How many revolutions per mile does a 245/55R17 tire make?
- About 730 revolutions per mile, based on a circumference of 86.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 245/55R17 tire?
- Roughly 7.0" to 8.5". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 225/60R17 instead of 245/55R17?
- 225/60R17 is +0.02 inches (+0.1%) in overall diameter, so at an indicated 60 mph you would be doing 60.0 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.