Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-12 | 155/70-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.99 (507.8) | 21.54 (547.2) | 1.55 (39.4) 7.8% |
| Width inches (mm) | 5.71 (145) | 6.1 (155) | 0.39 (10) 6.9% |
| Circum. inches (mm) | 62.81 (1595.3) | 67.68 (1719.08) | 4.87 (123.78) 7.8% |
| Sidewall Height inches (mm) | 4 (101.5) | 4.27 (108.5) | 0.28 (7) 6.9% |
| Revolutions per mile (km) | 1008.8 (626.84) | 936.17 (581.71) | -72.64 (-45.13) -7.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.55 mph (34.68 km/h) |
| 25 mph (40.23 km/h) | 26.94 mph (43.36 km/h) |
| 30 mph (48.28 km/h) | 32.33 mph (52.03 km/h) |
| 35 mph (56.33 km/h) | 37.72 mph (60.7 km/h) |
| 40 mph (64.37 km/h) | 43.1 mph (69.37 km/h) |
| 45 mph (72.42 km/h) | 48.49 mph (78.04 km/h) |
| 50 mph (80.47 km/h) | 53.88 mph (86.71 km/h) |
| 55 mph (88.51 km/h) | 59.27 mph (95.38 km/h) |
| 60 mph (96.56 km/h) | 64.66 mph (104.05 km/h) |
| 65 mph (104.61 km/h) | 70.04 mph (112.72 km/h) |
| 70 mph (112.65 km/h) | 75.43 mph (121.4 km/h) |
| 75 mph (120.7 km/h) | 80.82 mph (130.07 km/h) |
| 80 mph (128.75 km/h) | 86.21 mph (138.74 km/h) |
| 85 mph (136.79 km/h) | 91.6 mph (147.41 km/h) |
| 90 mph (144.84 km/h) | 96.98 mph (156.08 km/h) |
| 95 mph (152.89 km/h) | 102.37 mph (164.75 km/h) |
| 100 mph (160.93 km/h) | 107.76 mph (173.42 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
