Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/60-12 | 140/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 17.67 (448.8) | 20.82 (528.8) | 3.15 (80) 17.8% |
| Width inches (mm) | 4.72 (120) | 5.51 (140) | 0.79 (20) 16.7% |
| Circum. inches (mm) | 55.51 (1409.95) | 65.4 (1661.27) | 9.89 (251.33) 17.8% |
| Sidewall Height inches (mm) | 2.83 (72) | 4.41 (112) | 1.57 (40) 55.6% |
| Revolutions per mile (km) | 1141.42 (709.25) | 968.74 (601.95) | -172.68 (-107.3) -15.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.57 mph (37.92 km/h) |
| 25 mph (40.23 km/h) | 29.46 mph (47.41 km/h) |
| 30 mph (48.28 km/h) | 35.35 mph (56.89 km/h) |
| 35 mph (56.33 km/h) | 41.24 mph (66.37 km/h) |
| 40 mph (64.37 km/h) | 47.13 mph (75.85 km/h) |
| 45 mph (72.42 km/h) | 53.02 mph (85.33 km/h) |
| 50 mph (80.47 km/h) | 58.91 mph (94.81 km/h) |
| 55 mph (88.51 km/h) | 64.8 mph (104.29 km/h) |
| 60 mph (96.56 km/h) | 70.7 mph (113.77 km/h) |
| 65 mph (104.61 km/h) | 76.59 mph (123.25 km/h) |
| 70 mph (112.65 km/h) | 82.48 mph (132.74 km/h) |
| 75 mph (120.7 km/h) | 88.37 mph (142.22 km/h) |
| 80 mph (128.75 km/h) | 94.26 mph (151.7 km/h) |
| 85 mph (136.79 km/h) | 100.15 mph (161.18 km/h) |
| 90 mph (144.84 km/h) | 106.04 mph (170.66 km/h) |
| 95 mph (152.89 km/h) | 111.93 mph (180.14 km/h) |
| 100 mph (160.93 km/h) | 117.83 mph (189.62 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
