Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-15 | 255/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.97 (583.5) | 24.04 (610.5) | 1.06 (27) 4.6% |
| Width inches (mm) | 8.86 (225) | 10.04 (255) | 1.18 (30) 13.3% |
| Circum. inches (mm) | 72.17 (1833.12) | 75.51 (1917.94) | 3.34 (84.82) 4.6% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 4.52 (114.75) | 0.53 (13.5) 13.3% |
| Revolutions per mile (km) | 877.93 (545.52) | 839.1 (521.39) | -38.83 (-24.13) -4.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.93 mph (33.68 km/h) |
| 25 mph (40.23 km/h) | 26.16 mph (42.1 km/h) |
| 30 mph (48.28 km/h) | 31.39 mph (50.51 km/h) |
| 35 mph (56.33 km/h) | 36.62 mph (58.93 km/h) |
| 40 mph (64.37 km/h) | 41.85 mph (67.35 km/h) |
| 45 mph (72.42 km/h) | 47.08 mph (75.77 km/h) |
| 50 mph (80.47 km/h) | 52.31 mph (84.19 km/h) |
| 55 mph (88.51 km/h) | 57.54 mph (92.61 km/h) |
| 60 mph (96.56 km/h) | 62.78 mph (101.03 km/h) |
| 65 mph (104.61 km/h) | 68.01 mph (109.45 km/h) |
| 70 mph (112.65 km/h) | 73.24 mph (117.87 km/h) |
| 75 mph (120.7 km/h) | 78.47 mph (126.29 km/h) |
| 80 mph (128.75 km/h) | 83.7 mph (134.71 km/h) |
| 85 mph (136.79 km/h) | 88.93 mph (143.12 km/h) |
| 90 mph (144.84 km/h) | 94.16 mph (151.54 km/h) |
| 95 mph (152.89 km/h) | 99.4 mph (159.96 km/h) |
| 100 mph (160.93 km/h) | 104.63 mph (168.38 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2135 | 2481 | 2671 | 2790 | 2917 | 3008 | 3108 | 3226 | 3389 | 3553 | 3735 | 3880 | 4143 | 4434 | 4661 | 4807 | 4889 | 5188 | 5606 | 6515 |
Better Fuel Economy Factory Ratios Increased Power
