Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 100/90-12 | 120/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.09 (484.8) | 18.61 (472.8) | -0.47 (-12) -2.5% |
| Width inches (mm) | 3.94 (100) | 4.72 (120) | 0.79 (20) 20% |
| Circum. inches (mm) | 59.96 (1523.04) | 58.48 (1485.35) | -1.48 (-37.7) -2.5% |
| Sidewall Height inches (mm) | 3.54 (90) | 3.31 (84) | -0.24 (-6) -6.7% |
| Revolutions per mile (km) | 1056.66 (656.58) | 1083.48 (673.24) | 26.82 (16.66) 2.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.5 mph (31.39 km/h) |
| 25 mph (40.23 km/h) | 24.38 mph (39.24 km/h) |
| 30 mph (48.28 km/h) | 29.26 mph (47.09 km/h) |
| 35 mph (56.33 km/h) | 34.13 mph (54.93 km/h) |
| 40 mph (64.37 km/h) | 39.01 mph (62.78 km/h) |
| 45 mph (72.42 km/h) | 43.89 mph (70.63 km/h) |
| 50 mph (80.47 km/h) | 48.76 mph (78.48 km/h) |
| 55 mph (88.51 km/h) | 53.64 mph (86.32 km/h) |
| 60 mph (96.56 km/h) | 58.51 mph (94.17 km/h) |
| 65 mph (104.61 km/h) | 63.39 mph (102.02 km/h) |
| 70 mph (112.65 km/h) | 68.27 mph (109.87 km/h) |
| 75 mph (120.7 km/h) | 73.14 mph (117.71 km/h) |
| 80 mph (128.75 km/h) | 78.02 mph (125.56 km/h) |
| 85 mph (136.79 km/h) | 82.9 mph (133.41 km/h) |
| 90 mph (144.84 km/h) | 87.77 mph (141.26 km/h) |
| 95 mph (152.89 km/h) | 92.65 mph (149.1 km/h) |
| 100 mph (160.93 km/h) | 97.52 mph (156.95 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
