Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/45-15 | 245/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.68 (601.5) | 25.61 (650.5) | 1.93 (49) 8.1% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 74.4 (1889.67) | 80.46 (2043.61) | 6.06 (153.94) 8.1% |
| Sidewall Height inches (mm) | 4.34 (110.25) | 5.31 (134.75) | 0.96 (24.5) 22.2% |
| Revolutions per mile (km) | 851.65 (529.19) | 787.5 (489.33) | -64.15 (-39.86) -7.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.63 mph (34.81 km/h) |
| 25 mph (40.23 km/h) | 27.04 mph (43.51 km/h) |
| 30 mph (48.28 km/h) | 32.44 mph (52.21 km/h) |
| 35 mph (56.33 km/h) | 37.85 mph (60.92 km/h) |
| 40 mph (64.37 km/h) | 43.26 mph (69.62 km/h) |
| 45 mph (72.42 km/h) | 48.67 mph (78.32 km/h) |
| 50 mph (80.47 km/h) | 54.07 mph (87.02 km/h) |
| 55 mph (88.51 km/h) | 59.48 mph (95.72 km/h) |
| 60 mph (96.56 km/h) | 64.89 mph (104.43 km/h) |
| 65 mph (104.61 km/h) | 70.3 mph (113.13 km/h) |
| 70 mph (112.65 km/h) | 75.7 mph (121.83 km/h) |
| 75 mph (120.7 km/h) | 81.11 mph (130.53 km/h) |
| 80 mph (128.75 km/h) | 86.52 mph (139.24 km/h) |
| 85 mph (136.79 km/h) | 91.92 mph (147.94 km/h) |
| 90 mph (144.84 km/h) | 97.33 mph (156.64 km/h) |
| 95 mph (152.89 km/h) | 102.74 mph (165.34 km/h) |
| 100 mph (160.93 km/h) | 108.15 mph (174.04 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2004 | 2328 | 2507 | 2618 | 2737 | 2823 | 2917 | 3027 | 3181 | 3334 | 3505 | 3641 | 3889 | 4162 | 4375 | 4511 | 4588 | 4869 | 5262 | 6114 |
Better Fuel Economy Factory Ratios Increased Power
