Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/80-12 | 100/90-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.56 (496.8) | 19.09 (484.8) | -0.47 (-12) -2.4% |
| Width inches (mm) | 4.72 (120) | 3.94 (100) | -0.79 (-20) -16.7% |
| Circum. inches (mm) | 61.45 (1560.74) | 59.96 (1523.04) | -1.48 (-37.7) -2.4% |
| Sidewall Height inches (mm) | 3.78 (96) | 3.54 (90) | -0.24 (-6) -6.2% |
| Revolutions per mile (km) | 1031.14 (640.72) | 1056.66 (656.58) | 25.52 (15.86) 2.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.52 mph (31.41 km/h) |
| 25 mph (40.23 km/h) | 24.4 mph (39.26 km/h) |
| 30 mph (48.28 km/h) | 29.28 mph (47.11 km/h) |
| 35 mph (56.33 km/h) | 34.15 mph (54.97 km/h) |
| 40 mph (64.37 km/h) | 39.03 mph (62.82 km/h) |
| 45 mph (72.42 km/h) | 43.91 mph (70.67 km/h) |
| 50 mph (80.47 km/h) | 48.79 mph (78.52 km/h) |
| 55 mph (88.51 km/h) | 53.67 mph (86.38 km/h) |
| 60 mph (96.56 km/h) | 58.55 mph (94.23 km/h) |
| 65 mph (104.61 km/h) | 63.43 mph (102.08 km/h) |
| 70 mph (112.65 km/h) | 68.31 mph (109.93 km/h) |
| 75 mph (120.7 km/h) | 73.19 mph (117.79 km/h) |
| 80 mph (128.75 km/h) | 78.07 mph (125.64 km/h) |
| 85 mph (136.79 km/h) | 82.95 mph (133.49 km/h) |
| 90 mph (144.84 km/h) | 87.83 mph (141.34 km/h) |
| 95 mph (152.89 km/h) | 92.71 mph (149.2 km/h) |
| 100 mph (160.93 km/h) | 97.58 mph (157.05 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
