295/40R18 tire size in inches
A 295/40R18 tire measures
27.3" tall × 11.6" wide
4.65" sidewall on a 18" wheel. 739 revolutions per mile.
295/40R18 means a tire 295 mm wide, with sidewalls 40% as tall as the tire is wide (118 mm), radial construction (R), for a 18 inch wheel.
295/40R18 specs
| Overall diameter (height) | 27.29 inches (693 mm) |
|---|---|
| Section width | 11.61 inches (295 mm) |
| Sidewall height | 4.65 inches (118 mm) |
| Wheel (rim) diameter | 18 inches |
| Circumference | 85.7 inches (2,178 mm) |
| Revolutions per mile | 739 |
| Revolutions per kilometer | 459 |
| Approximate rim width | 9.5" to 11.0" |
| In inches (flotation style) | 27.3x11.6R18 |
| Aspect ratio | 40% |
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 295/40R18 on a 18" wheel
These 18" sizes are within 3% of 295/40R18's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 215/55R18 | 27.31" | 8.46" | +0.1% | 60.0 mph | Compare |
| 235/50R18 | 27.25" | 9.25" | −0.1% | 59.9 mph | Compare |
| 335/35R18 | 27.23" | 13.19" | −0.2% | 59.9 mph | Compare |
| 195/60R18 | 27.21" | 7.68" | −0.3% | 59.8 mph | Compare |
| 265/45R18 | 27.39" | 10.43" | +0.4% | 60.2 mph | Compare |
| 255/45R18 | 27.04" | 10.04" | −0.9% | 59.4 mph | Compare |
| 305/40R18 | 27.61" | 12.01" | +1.2% | 60.7 mph | Compare |
| 285/40R18 | 26.98" | 11.22" | −1.2% | 59.3 mph | Compare |
| 325/35R18 | 26.96" | 12.80" | −1.2% | 59.3 mph | Compare |
| 245/50R18 | 27.65" | 9.65" | +1.3% | 60.8 mph | Compare |
| 205/60R18 | 27.69" | 8.07" | +1.4% | 60.9 mph | Compare |
| 205/55R18 | 26.88" | 8.07" | −1.5% | 59.1 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 225/75R14 | 14" | 27.29" | 0.0% | Compare |
| 195/80R15 | 15" | 27.28" | 0.0% | Compare |
| 205/70R16 | 16" | 27.30" | 0.0% | Compare |
| 265/35R20 | 20" | 27.30" | 0.0% | Compare |
| 265/30R21 | 21" | 27.26" | −0.1% | Compare |
| 235/45R19 | 19" | 27.33" | +0.1% | Compare |
| 285/55R15 | 15" | 27.34" | +0.2% | Compare |
| 265/40R19 | 19" | 27.35" | +0.2% | Compare |
| 285/50R16 | 16" | 27.22" | −0.3% | Compare |
| 265/25R22 | 22" | 27.22" | −0.3% | Compare |
| 305/30R20 | 20" | 27.20" | −0.3% | Compare |
| 185/85R15 | 15" | 27.38" | +0.3% | Compare |
One size up or down
- 285/40R18narrower: 27.0" × 11.2"
- 305/40R18wider: 27.6" × 12.0"
- 295/35R18lower profile: 26.1" × 11.6"
- 295/45R18taller sidewall: 28.5" × 11.6"
Compare 295/40R18 with another size
Questions
- How tall is a 295/40R18 tire?
- A 295/40R18 tire is 27.3 inches tall (693 mm), calculated from the size. It is 11.6 inches wide with 4.6 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 295/40R18 mean?
- 295/40R18 means a tire 295 mm wide, with sidewalls 40% as tall as the tire is wide (118 mm), radial construction (R), for a 18 inch wheel.
- How many revolutions per mile does a 295/40R18 tire make?
- About 739 revolutions per mile, based on a circumference of 85.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 295/40R18 tire?
- Roughly 9.5" to 11.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 215/55R18 instead of 295/40R18?
- 215/55R18 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.