Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/70-12 | 140/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.61 (472.8) | 19.72 (500.8) | 1.1 (28) 5.9% |
| Width inches (mm) | 4.72 (120) | 5.51 (140) | 0.79 (20) 16.7% |
| Circum. inches (mm) | 58.48 (1485.35) | 61.94 (1573.31) | 3.46 (87.96) 5.9% |
| Sidewall Height inches (mm) | 3.31 (84) | 3.86 (98) | 0.55 (14) 16.7% |
| Revolutions per mile (km) | 1083.48 (673.24) | 1022.9 (635.6) | -60.58 (-37.64) -5.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.18 mph (34.09 km/h) |
| 25 mph (40.23 km/h) | 26.48 mph (42.62 km/h) |
| 30 mph (48.28 km/h) | 31.78 mph (51.14 km/h) |
| 35 mph (56.33 km/h) | 37.07 mph (59.66 km/h) |
| 40 mph (64.37 km/h) | 42.37 mph (68.19 km/h) |
| 45 mph (72.42 km/h) | 47.66 mph (76.71 km/h) |
| 50 mph (80.47 km/h) | 52.96 mph (85.23 km/h) |
| 55 mph (88.51 km/h) | 58.26 mph (93.76 km/h) |
| 60 mph (96.56 km/h) | 63.55 mph (102.28 km/h) |
| 65 mph (104.61 km/h) | 68.85 mph (110.8 km/h) |
| 70 mph (112.65 km/h) | 74.15 mph (119.33 km/h) |
| 75 mph (120.7 km/h) | 79.44 mph (127.85 km/h) |
| 80 mph (128.75 km/h) | 84.74 mph (136.37 km/h) |
| 85 mph (136.79 km/h) | 90.03 mph (144.9 km/h) |
| 90 mph (144.84 km/h) | 95.33 mph (153.42 km/h) |
| 95 mph (152.89 km/h) | 100.63 mph (161.94 km/h) |
| 100 mph (160.93 km/h) | 105.92 mph (170.47 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
