Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/80-12 | 140/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.56 (496.8) | 19.72 (500.8) | 0.16 (4) 0.8% |
| Width inches (mm) | 4.72 (120) | 5.51 (140) | 0.79 (20) 16.7% |
| Circum. inches (mm) | 61.45 (1560.74) | 61.94 (1573.31) | 0.49 (12.57) 0.8% |
| Sidewall Height inches (mm) | 3.78 (96) | 3.86 (98) | 0.08 (2) 2.1% |
| Revolutions per mile (km) | 1031.14 (640.72) | 1022.9 (635.6) | -8.24 (-5.12) -0.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.16 mph (32.45 km/h) |
| 25 mph (40.23 km/h) | 25.2 mph (40.56 km/h) |
| 30 mph (48.28 km/h) | 30.24 mph (48.67 km/h) |
| 35 mph (56.33 km/h) | 35.28 mph (56.78 km/h) |
| 40 mph (64.37 km/h) | 40.32 mph (64.89 km/h) |
| 45 mph (72.42 km/h) | 45.36 mph (73 km/h) |
| 50 mph (80.47 km/h) | 50.4 mph (81.12 km/h) |
| 55 mph (88.51 km/h) | 55.44 mph (89.23 km/h) |
| 60 mph (96.56 km/h) | 60.48 mph (97.34 km/h) |
| 65 mph (104.61 km/h) | 65.52 mph (105.45 km/h) |
| 70 mph (112.65 km/h) | 70.56 mph (113.56 km/h) |
| 75 mph (120.7 km/h) | 75.6 mph (121.67 km/h) |
| 80 mph (128.75 km/h) | 80.64 mph (129.78 km/h) |
| 85 mph (136.79 km/h) | 85.68 mph (137.9 km/h) |
| 90 mph (144.84 km/h) | 90.72 mph (146.01 km/h) |
| 95 mph (152.89 km/h) | 95.76 mph (154.12 km/h) |
| 100 mph (160.93 km/h) | 100.81 mph (162.23 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
