Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-12 | 145/75-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.99 (507.8) | 20.56 (522.3) | 0.57 (14.5) 2.9% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 62.81 (1595.3) | 64.6 (1640.85) | 1.79 (45.55) 2.9% |
| Sidewall Height inches (mm) | 4 (101.5) | 4.28 (108.75) | 0.29 (7.25) 7.1% |
| Revolutions per mile (km) | 1008.8 (626.84) | 980.8 (609.44) | -28.01 (-17.4) -2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.57 mph (33.11 km/h) |
| 25 mph (40.23 km/h) | 25.71 mph (41.38 km/h) |
| 30 mph (48.28 km/h) | 30.86 mph (49.66 km/h) |
| 35 mph (56.33 km/h) | 36 mph (57.94 km/h) |
| 40 mph (64.37 km/h) | 41.14 mph (66.21 km/h) |
| 45 mph (72.42 km/h) | 46.28 mph (74.49 km/h) |
| 50 mph (80.47 km/h) | 51.43 mph (82.77 km/h) |
| 55 mph (88.51 km/h) | 56.57 mph (91.04 km/h) |
| 60 mph (96.56 km/h) | 61.71 mph (99.32 km/h) |
| 65 mph (104.61 km/h) | 66.86 mph (107.59 km/h) |
| 70 mph (112.65 km/h) | 72 mph (115.87 km/h) |
| 75 mph (120.7 km/h) | 77.14 mph (124.15 km/h) |
| 80 mph (128.75 km/h) | 82.28 mph (132.42 km/h) |
| 85 mph (136.79 km/h) | 87.43 mph (140.7 km/h) |
| 90 mph (144.84 km/h) | 92.57 mph (148.98 km/h) |
| 95 mph (152.89 km/h) | 97.71 mph (157.25 km/h) |
| 100 mph (160.93 km/h) | 102.86 mph (165.53 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
