245/60R18 tire size in inches
A 245/60R18 tire measures
29.6" tall × 9.6" wide
5.79" sidewall on a 18" wheel. 682 revolutions per mile.
245/60R18 means a tire 245 mm wide, with sidewalls 60% as tall as the tire is wide (147 mm), radial construction (R), for a 18 inch wheel.
245/60R18 specs
| Overall diameter (height) | 29.57 inches (751 mm) |
|---|---|
| Section width | 9.65 inches (245 mm) |
| Sidewall height | 5.79 inches (147 mm) |
| Wheel (rim) diameter | 18 inches |
| Circumference | 92.9 inches (2,360 mm) |
| Revolutions per mile | 682 |
| Revolutions per kilometer | 424 |
| Approximate rim width | 6.5" to 8.0" |
| In inches (flotation style) | 29.6x9.6R18 |
| Aspect ratio | 60% |
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 245/60R18 on a 18" wheel
These 18" sizes are within 3% of 245/60R18's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 295/50R18 | 29.61" | 11.61" | +0.1% | 60.1 mph | Compare |
| 195/75R18 | 29.52" | 7.68" | −0.2% | 59.9 mph | Compare |
| 225/65R18 | 29.52" | 8.86" | −0.2% | 59.9 mph | Compare |
| 325/45R18 | 29.52" | 12.80" | −0.2% | 59.9 mph | Compare |
| 265/55R18 | 29.48" | 10.43" | −0.3% | 59.8 mph | Compare |
| 205/70R18 | 29.30" | 8.07" | −0.9% | 59.4 mph | Compare |
| 215/70R18 | 29.85" | 8.46" | +0.9% | 60.6 mph | Compare |
| 335/45R18 | 29.87" | 13.19" | +1.0% | 60.6 mph | Compare |
| 275/55R18 | 29.91" | 10.83" | +1.1% | 60.7 mph | Compare |
| 285/50R18 | 29.22" | 11.22" | −1.2% | 59.3 mph | Compare |
| 315/45R18 | 29.16" | 12.40" | −1.4% | 59.2 mph | Compare |
| 305/50R18 | 30.01" | 12.01" | +1.5% | 60.9 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 275/35R22 | 22" | 29.58" | 0.0% | Compare |
| 265/65R16 | 16" | 29.56" | 0.0% | Compare |
| 285/65R15 | 15" | 29.59" | 0.0% | Compare |
| 335/40R19 | 19" | 29.55" | −0.1% | Compare |
| 215/80R16 | 16" | 29.54" | −0.1% | Compare |
| 265/70R15 | 15" | 29.61" | +0.1% | Compare |
| 305/40R20 | 20" | 29.61" | +0.1% | Compare |
| 245/55R19 | 19" | 29.61" | +0.1% | Compare |
| 285/25R24 | 24" | 29.61" | +0.1% | Compare |
| 245/65R17 | 17" | 29.54" | −0.1% | Compare |
| 225/60R19 | 19" | 29.63" | +0.2% | Compare |
| 265/60R17 | 17" | 29.52" | −0.2% | Compare |
One size up or down
- 235/60R18narrower: 29.1" × 9.3"
- 255/60R18wider: 30.0" × 10.0"
- 245/55R18lower profile: 28.6" × 9.6"
- 245/65R18taller sidewall: 30.5" × 9.6"
Compare 245/60R18 with another size
Questions
- How tall is a 245/60R18 tire?
- A 245/60R18 tire is 29.6 inches tall (751 mm), calculated from the size. It is 9.6 inches wide with 5.8 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 245/60R18 mean?
- 245/60R18 means a tire 245 mm wide, with sidewalls 60% as tall as the tire is wide (147 mm), radial construction (R), for a 18 inch wheel.
- How many revolutions per mile does a 245/60R18 tire make?
- About 682 revolutions per mile, based on a circumference of 92.9 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 245/60R18 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 295/50R18 instead of 245/60R18?
- 295/50R18 is +0.04 inches (+0.1%) in overall diameter, so at an indicated 60 mph you would be doing 60.1 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.