265/50R18 tire size in inches
A 265/50R18 tire measures
28.4" tall × 10.4" wide
5.22" sidewall on a 18" wheel. 709 revolutions per mile.
265/50R18 means a tire 265 mm wide, with sidewalls 50% as tall as the tire is wide (133 mm), radial construction (R), for a 18 inch wheel.
265/50R18 specs
| Overall diameter (height) | 28.43 inches (722 mm) |
|---|---|
| Section width | 10.43 inches (265 mm) |
| Sidewall height | 5.22 inches (133 mm) |
| Wheel (rim) diameter | 18 inches |
| Circumference | 89.3 inches (2,269 mm) |
| Revolutions per mile | 709 |
| Revolutions per kilometer | 441 |
| Approximate rim width | 7.5" to 9.0" |
| In inches (flotation style) | 28.4x10.4R18 |
| Aspect ratio | 50% |
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 265/50R18 on a 18" wheel
These 18" sizes are within 3% of 265/50R18's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 295/45R18 | 28.45" | 11.61" | +0.1% | 60.0 mph | Compare |
| 205/65R18 | 28.49" | 8.07" | +0.2% | 60.1 mph | Compare |
| 335/40R18 | 28.55" | 13.19" | +0.4% | 60.2 mph | Compare |
| 245/55R18 | 28.61" | 9.65" | +0.6% | 60.4 mph | Compare |
| 225/60R18 | 28.63" | 8.86" | +0.7% | 60.4 mph | Compare |
| 325/40R18 | 28.24" | 12.80" | −0.7% | 59.6 mph | Compare |
| 235/55R18 | 28.18" | 9.25" | −0.9% | 59.5 mph | Compare |
| 215/60R18 | 28.16" | 8.46" | −1.0% | 59.4 mph | Compare |
| 195/70R18 | 28.75" | 7.68" | +1.1% | 60.7 mph | Compare |
| 285/45R18 | 28.10" | 11.22" | −1.2% | 59.3 mph | Compare |
| 305/45R18 | 28.81" | 12.01" | +1.3% | 60.8 mph | Compare |
| 275/50R18 | 28.83" | 10.83" | +1.4% | 60.8 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 245/80R13 | 13" | 28.43" | 0.0% | Compare |
| 315/30R21 | 21" | 28.44" | 0.0% | Compare |
| 305/35R20 | 20" | 28.41" | −0.1% | Compare |
| 215/50R20 | 20" | 28.46" | +0.1% | Compare |
| 225/70R16 | 16" | 28.40" | −0.1% | Compare |
| 235/40R21 | 21" | 28.40" | −0.1% | Compare |
| 285/60R15 | 15" | 28.46" | +0.1% | Compare |
| 245/75R14 | 14" | 28.47" | +0.1% | Compare |
| 325/25R22 | 22" | 28.40" | −0.1% | Compare |
| 235/35R22 | 22" | 28.48" | +0.2% | Compare |
| 265/55R17 | 17" | 28.48" | +0.2% | Compare |
| 215/85R14 | 14" | 28.39" | −0.2% | Compare |
One size up or down
- 255/50R18narrower: 28.0" × 10.0"
- 275/50R18wider: 28.8" × 10.8"
- 265/45R18lower profile: 27.4" × 10.4"
- 265/55R18taller sidewall: 29.5" × 10.4"
Compare 265/50R18 with another size
Questions
- How tall is a 265/50R18 tire?
- A 265/50R18 tire is 28.4 inches tall (722 mm), calculated from the size. It is 10.4 inches wide with 5.2 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 265/50R18 mean?
- 265/50R18 means a tire 265 mm wide, with sidewalls 50% as tall as the tire is wide (133 mm), radial construction (R), for a 18 inch wheel.
- How many revolutions per mile does a 265/50R18 tire make?
- About 709 revolutions per mile, based on a circumference of 89.3 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 265/50R18 tire?
- Roughly 7.5" to 9.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 295/45R18 instead of 265/50R18?
- 295/45R18 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.