245/75R17 tire size in inches
A 245/75R17 tire measures
31.5" tall × 9.6" wide
7.23" sidewall on a 17" wheel. 641 revolutions per mile.
245/75R17 means a tire 245 mm wide, with sidewalls 75% as tall as the tire is wide (184 mm), radial construction (R), for a 17 inch wheel.
245/75R17 specs
| Overall diameter (height) | 31.47 inches (799 mm) |
|---|---|
| Section width | 9.65 inches (245 mm) |
| Sidewall height | 7.23 inches (184 mm) |
| Wheel (rim) diameter | 17 inches |
| Circumference | 98.9 inches (2,511 mm) |
| Revolutions per mile | 641 |
| Revolutions per kilometer | 398 |
| Approximate rim width | 6.5" to 8.0" |
| In inches (flotation style) | 31.5x9.6R17 |
| Aspect ratio | 75% |
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 245/75R17 on a 17" wheel
These 17" sizes are within 3% of 245/75R17's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 305/60R17 | 31.41" | 12.01" | −0.2% | 59.9 mph | Compare |
| 285/65R17 | 31.59" | 11.22" | +0.4% | 60.2 mph | Compare |
| 265/70R17 | 31.61" | 10.43" | +0.4% | 60.3 mph | Compare |
| 275/65R17 | 31.07" | 10.83" | −1.3% | 59.2 mph | Compare |
| 255/70R17 | 31.06" | 10.04" | −1.3% | 59.2 mph | Compare |
| 315/60R17 | 31.88" | 12.40" | +1.3% | 60.8 mph | Compare |
| 295/60R17 | 30.94" | 11.61" | −1.7% | 59.0 mph | Compare |
| 235/75R17 | 30.88" | 9.25" | −1.9% | 58.9 mph | Compare |
| 255/75R17 | 32.06" | 10.04" | +1.9% | 61.1 mph | Compare |
| 295/65R17 | 32.10" | 11.61" | +2.0% | 61.2 mph | Compare |
| 275/70R17 | 32.16" | 10.83" | +2.2% | 61.3 mph | Compare |
| 315/55R17 | 30.64" | 12.40" | −2.6% | 58.4 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 285/60R18 | 18" | 31.46" | 0.0% | Compare |
| 265/55R20 | 20" | 31.48" | 0.0% | Compare |
| 295/45R21 | 21" | 31.45" | −0.1% | Compare |
| 315/30R24 | 24" | 31.44" | −0.1% | Compare |
| 245/80R16 | 16" | 31.43" | −0.1% | Compare |
| 245/70R18 | 18" | 31.50" | +0.1% | Compare |
| 265/50R21 | 21" | 31.43" | −0.1% | Compare |
| 345/35R22 | 22" | 31.51" | +0.1% | Compare |
| 225/65R20 | 20" | 31.52" | +0.2% | Compare |
| 325/45R20 | 20" | 31.52" | +0.2% | Compare |
| 265/60R19 | 19" | 31.52" | +0.2% | Compare |
| 315/50R19 | 19" | 31.40" | −0.2% | Compare |
One size up or down
Compare 245/75R17 with another size
Questions
- How tall is a 245/75R17 tire?
- A 245/75R17 tire is 31.5 inches tall (799 mm), calculated from the size. It is 9.6 inches wide with 7.2 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 245/75R17 mean?
- 245/75R17 means a tire 245 mm wide, with sidewalls 75% as tall as the tire is wide (184 mm), radial construction (R), for a 17 inch wheel.
- How many revolutions per mile does a 245/75R17 tire make?
- About 641 revolutions per mile, based on a circumference of 98.9 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 245/75R17 tire?
- Roughly 6.5" to 8.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 305/60R17 instead of 245/75R17?
- 305/60R17 is −0.06 inches (−0.2%) in overall diameter, so at an indicated 60 mph you would be doing 59.9 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.