Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/90-12 | 100/90-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 19.09 (484.8) | -1.42 (-36) -6.9% |
| Width inches (mm) | 4.72 (120) | 3.94 (100) | -0.79 (-20) -16.7% |
| Circum. inches (mm) | 64.42 (1636.14) | 59.96 (1523.04) | -4.45 (-113.1) -6.9% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.54 (90) | -0.71 (-18) -16.7% |
| Revolutions per mile (km) | 983.62 (611.19) | 1056.66 (656.58) | 73.04 (45.39) 7.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.62 mph (29.96 km/h) |
| 25 mph (40.23 km/h) | 23.27 mph (37.45 km/h) |
| 30 mph (48.28 km/h) | 27.93 mph (44.94 km/h) |
| 35 mph (56.33 km/h) | 32.58 mph (52.43 km/h) |
| 40 mph (64.37 km/h) | 37.24 mph (59.92 km/h) |
| 45 mph (72.42 km/h) | 41.89 mph (67.41 km/h) |
| 50 mph (80.47 km/h) | 46.54 mph (74.91 km/h) |
| 55 mph (88.51 km/h) | 51.2 mph (82.4 km/h) |
| 60 mph (96.56 km/h) | 55.85 mph (89.89 km/h) |
| 65 mph (104.61 km/h) | 60.51 mph (97.38 km/h) |
| 70 mph (112.65 km/h) | 65.16 mph (104.87 km/h) |
| 75 mph (120.7 km/h) | 69.82 mph (112.36 km/h) |
| 80 mph (128.75 km/h) | 74.47 mph (119.85 km/h) |
| 85 mph (136.79 km/h) | 79.12 mph (127.34 km/h) |
| 90 mph (144.84 km/h) | 83.78 mph (134.83 km/h) |
| 95 mph (152.89 km/h) | 88.43 mph (142.32 km/h) |
| 100 mph (160.93 km/h) | 93.09 mph (149.81 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
