255/45R16 tire size in inches
A 255/45R16 tire measures
25.0" tall × 10.0" wide
4.52" sidewall on a 16" wheel. 806 revolutions per mile.
255/45R16 means a tire 255 mm wide, with sidewalls 45% as tall as the tire is wide (115 mm), radial construction (R), for a 16 inch wheel.
255/45R16 specs
| Overall diameter (height) | 25.04 inches (636 mm) |
|---|---|
| Section width | 10.04 inches (255 mm) |
| Sidewall height | 4.52 inches (115 mm) |
| Wheel (rim) diameter | 16 inches |
| Circumference | 78.7 inches (1,998 mm) |
| Revolutions per mile | 806 |
| Revolutions per kilometer | 501 |
| Approximate rim width | 8.5" to 10.0" |
| In inches (flotation style) | 25.0x10.0R16 |
| Aspect ratio | 45% |
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 255/45R16 on a 16" wheel
These 16" sizes are within 3% of 255/45R16's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 285/40R16 | 24.98" | 11.22" | −0.2% | 59.9 mph | Compare |
| 175/65R16 | 24.96" | 6.89" | −0.3% | 59.8 mph | Compare |
| 205/55R16 | 24.88" | 8.07" | −0.6% | 59.6 mph | Compare |
| 225/50R16 | 24.86" | 8.86" | −0.7% | 59.6 mph | Compare |
| 195/60R16 | 25.21" | 7.68" | +0.7% | 60.4 mph | Compare |
| 235/50R16 | 25.25" | 9.25" | +0.9% | 60.5 mph | Compare |
| 295/40R16 | 25.29" | 11.61" | +1.0% | 60.6 mph | Compare |
| 215/55R16 | 25.31" | 8.46" | +1.1% | 60.7 mph | Compare |
| 185/60R16 | 24.74" | 7.28" | −1.2% | 59.3 mph | Compare |
| 245/45R16 | 24.68" | 9.65" | −1.4% | 59.2 mph | Compare |
| 265/45R16 | 25.39" | 10.43" | +1.4% | 60.8 mph | Compare |
| 275/40R16 | 24.66" | 10.83" | −1.5% | 59.1 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 255/50R15 | 15" | 25.04" | 0.0% | Compare |
| 255/40R17 | 17" | 25.03" | 0.0% | Compare |
| 235/65R13 | 13" | 25.03" | 0.0% | Compare |
| 255/35R18 | 18" | 25.03" | 0.0% | Compare |
| 165/85R14 | 14" | 25.04" | 0.0% | Compare |
| 255/55R14 | 14" | 25.04" | 0.0% | Compare |
| 175/80R14 | 14" | 25.02" | 0.0% | Compare |
| 255/30R19 | 19" | 25.02" | 0.0% | Compare |
| 255/25R20 | 20" | 25.02" | −0.1% | Compare |
| 185/55R17 | 17" | 25.01" | −0.1% | Compare |
| 215/65R14 | 14" | 25.00" | −0.1% | Compare |
| 305/25R19 | 19" | 25.00" | −0.1% | Compare |
One size up or down
- 245/45R16narrower: 24.7" × 9.6"
- 265/45R16wider: 25.4" × 10.4"
- 255/40R16lower profile: 24.0" × 10.0"
- 255/50R16taller sidewall: 26.0" × 10.0"
Compare 255/45R16 with another size
Questions
- How tall is a 255/45R16 tire?
- A 255/45R16 tire is 25.0 inches tall (636 mm), calculated from the size. It is 10.0 inches wide with 4.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 255/45R16 mean?
- 255/45R16 means a tire 255 mm wide, with sidewalls 45% as tall as the tire is wide (115 mm), radial construction (R), for a 16 inch wheel.
- How many revolutions per mile does a 255/45R16 tire make?
- About 806 revolutions per mile, based on a circumference of 78.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 255/45R16 tire?
- Roughly 8.5" to 10.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 285/40R16 instead of 255/45R16?
- 285/40R16 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.