Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-13 | 145/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.99 (533.2) | 21.13 (536.8) | 0.14 (3.6) 0.7% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 65.95 (1675.1) | 66.39 (1686.41) | 0.45 (11.31) 0.7% |
| Sidewall Height inches (mm) | 4 (101.5) | 4.57 (116) | 0.57 (14.5) 14.3% |
| Revolutions per mile (km) | 960.75 (596.98) | 954.3 (592.98) | -6.44 (-4) -0.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.14 mph (32.4 km/h) |
| 25 mph (40.23 km/h) | 25.17 mph (40.51 km/h) |
| 30 mph (48.28 km/h) | 30.2 mph (48.61 km/h) |
| 35 mph (56.33 km/h) | 35.24 mph (56.71 km/h) |
| 40 mph (64.37 km/h) | 40.27 mph (64.81 km/h) |
| 45 mph (72.42 km/h) | 45.3 mph (72.91 km/h) |
| 50 mph (80.47 km/h) | 50.34 mph (81.01 km/h) |
| 55 mph (88.51 km/h) | 55.37 mph (89.11 km/h) |
| 60 mph (96.56 km/h) | 60.41 mph (97.21 km/h) |
| 65 mph (104.61 km/h) | 65.44 mph (105.31 km/h) |
| 70 mph (112.65 km/h) | 70.47 mph (113.41 km/h) |
| 75 mph (120.7 km/h) | 75.51 mph (121.52 km/h) |
| 80 mph (128.75 km/h) | 80.54 mph (129.62 km/h) |
| 85 mph (136.79 km/h) | 85.57 mph (137.72 km/h) |
| 90 mph (144.84 km/h) | 90.61 mph (145.82 km/h) |
| 95 mph (152.89 km/h) | 95.64 mph (153.92 km/h) |
| 100 mph (160.93 km/h) | 100.68 mph (162.02 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
