Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/80-12 | 120/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.56 (496.8) | 18.61 (472.8) | -0.94 (-24) -4.8% |
| Width inches (mm) | 4.72 (120) | 4.72 (120) | 0 (0) 0% |
| Circum. inches (mm) | 61.45 (1560.74) | 58.48 (1485.35) | -2.97 (-75.4) -4.8% |
| Sidewall Height inches (mm) | 3.78 (96) | 3.31 (84) | -0.47 (-12) -12.5% |
| Revolutions per mile (km) | 1031.14 (640.72) | 1083.48 (673.24) | 52.34 (32.52) 5.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.03 mph (30.63 km/h) |
| 25 mph (40.23 km/h) | 23.79 mph (38.29 km/h) |
| 30 mph (48.28 km/h) | 28.55 mph (45.95 km/h) |
| 35 mph (56.33 km/h) | 33.31 mph (53.61 km/h) |
| 40 mph (64.37 km/h) | 38.07 mph (61.26 km/h) |
| 45 mph (72.42 km/h) | 42.83 mph (68.92 km/h) |
| 50 mph (80.47 km/h) | 47.58 mph (76.58 km/h) |
| 55 mph (88.51 km/h) | 52.34 mph (84.24 km/h) |
| 60 mph (96.56 km/h) | 57.1 mph (91.9 km/h) |
| 65 mph (104.61 km/h) | 61.86 mph (99.55 km/h) |
| 70 mph (112.65 km/h) | 66.62 mph (107.21 km/h) |
| 75 mph (120.7 km/h) | 71.38 mph (114.87 km/h) |
| 80 mph (128.75 km/h) | 76.14 mph (122.53 km/h) |
| 85 mph (136.79 km/h) | 80.89 mph (130.19 km/h) |
| 90 mph (144.84 km/h) | 85.65 mph (137.84 km/h) |
| 95 mph (152.89 km/h) | 90.41 mph (145.5 km/h) |
| 100 mph (160.93 km/h) | 95.17 mph (153.16 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
