Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 100/80-12 | 120/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.3 (464.8) | 18.61 (472.8) | 0.31 (8) 1.7% |
| Width inches (mm) | 3.94 (100) | 4.72 (120) | 0.79 (20) 20% |
| Circum. inches (mm) | 57.49 (1460.21) | 58.48 (1485.35) | 0.99 (25.13) 1.7% |
| Sidewall Height inches (mm) | 3.15 (80) | 3.31 (84) | 0.16 (4) 5% |
| Revolutions per mile (km) | 1102.13 (684.83) | 1083.48 (673.24) | -18.65 (-11.59) -1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.34 mph (32.74 km/h) |
| 25 mph (40.23 km/h) | 25.43 mph (40.93 km/h) |
| 30 mph (48.28 km/h) | 30.52 mph (49.11 km/h) |
| 35 mph (56.33 km/h) | 35.6 mph (57.3 km/h) |
| 40 mph (64.37 km/h) | 40.69 mph (65.48 km/h) |
| 45 mph (72.42 km/h) | 45.77 mph (73.67 km/h) |
| 50 mph (80.47 km/h) | 50.86 mph (81.85 km/h) |
| 55 mph (88.51 km/h) | 55.95 mph (90.04 km/h) |
| 60 mph (96.56 km/h) | 61.03 mph (98.22 km/h) |
| 65 mph (104.61 km/h) | 66.12 mph (106.41 km/h) |
| 70 mph (112.65 km/h) | 71.2 mph (114.59 km/h) |
| 75 mph (120.7 km/h) | 76.29 mph (122.78 km/h) |
| 80 mph (128.75 km/h) | 81.38 mph (130.96 km/h) |
| 85 mph (136.79 km/h) | 86.46 mph (139.15 km/h) |
| 90 mph (144.84 km/h) | 91.55 mph (147.33 km/h) |
| 95 mph (152.89 km/h) | 96.64 mph (155.52 km/h) |
| 100 mph (160.93 km/h) | 101.72 mph (163.7 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
