Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/60-12 | 120/100-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 17.67 (448.8) | 21.45 (544.8) | 3.78 (96) 21.4% |
| Width inches (mm) | 4.72 (120) | 4.72 (120) | 0 (0) 0% |
| Circum. inches (mm) | 55.51 (1409.95) | 67.38 (1711.54) | 11.87 (301.59) 21.4% |
| Sidewall Height inches (mm) | 2.83 (72) | 4.72 (120) | 1.89 (48) 66.7% |
| Revolutions per mile (km) | 1141.42 (709.25) | 940.29 (584.27) | -201.13 (-124.98) -17.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.28 mph (39.07 km/h) |
| 25 mph (40.23 km/h) | 30.35 mph (48.84 km/h) |
| 30 mph (48.28 km/h) | 36.42 mph (58.61 km/h) |
| 35 mph (56.33 km/h) | 42.49 mph (68.38 km/h) |
| 40 mph (64.37 km/h) | 48.56 mph (78.14 km/h) |
| 45 mph (72.42 km/h) | 54.63 mph (87.91 km/h) |
| 50 mph (80.47 km/h) | 60.7 mph (97.68 km/h) |
| 55 mph (88.51 km/h) | 66.76 mph (107.45 km/h) |
| 60 mph (96.56 km/h) | 72.83 mph (117.22 km/h) |
| 65 mph (104.61 km/h) | 78.9 mph (126.98 km/h) |
| 70 mph (112.65 km/h) | 84.97 mph (136.75 km/h) |
| 75 mph (120.7 km/h) | 91.04 mph (146.52 km/h) |
| 80 mph (128.75 km/h) | 97.11 mph (156.29 km/h) |
| 85 mph (136.79 km/h) | 103.18 mph (166.06 km/h) |
| 90 mph (144.84 km/h) | 109.25 mph (175.82 km/h) |
| 95 mph (152.89 km/h) | 115.32 mph (185.59 km/h) |
| 100 mph (160.93 km/h) | 121.39 mph (195.36 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
