Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 50/80-17 | 60/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.15 (511.8) | 17.78 (451.6) | -2.37 (-60.2) -11.8% |
| Width inches (mm) | 1.97 (50) | 2.36 (60) | 0.39 (10) 20% |
| Circum. inches (mm) | 63.3 (1607.87) | 55.86 (1418.74) | -7.45 (-189.12) -11.8% |
| Sidewall Height inches (mm) | 1.57 (40) | 1.89 (48) | 0.31 (8) 20% |
| Revolutions per mile (km) | 1000.92 (621.94) | 1134.34 (704.85) | 133.43 (82.91) 13.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.65 mph (28.4 km/h) |
| 25 mph (40.23 km/h) | 22.06 mph (35.5 km/h) |
| 30 mph (48.28 km/h) | 26.47 mph (42.6 km/h) |
| 35 mph (56.33 km/h) | 30.88 mph (49.7 km/h) |
| 40 mph (64.37 km/h) | 35.3 mph (56.8 km/h) |
| 45 mph (72.42 km/h) | 39.71 mph (63.9 km/h) |
| 50 mph (80.47 km/h) | 44.12 mph (71 km/h) |
| 55 mph (88.51 km/h) | 48.53 mph (78.1 km/h) |
| 60 mph (96.56 km/h) | 52.94 mph (85.2 km/h) |
| 65 mph (104.61 km/h) | 57.35 mph (92.3 km/h) |
| 70 mph (112.65 km/h) | 61.77 mph (99.4 km/h) |
| 75 mph (120.7 km/h) | 66.18 mph (106.5 km/h) |
| 80 mph (128.75 km/h) | 70.59 mph (113.6 km/h) |
| 85 mph (136.79 km/h) | 75 mph (120.7 km/h) |
| 90 mph (144.84 km/h) | 79.41 mph (127.8 km/h) |
| 95 mph (152.89 km/h) | 83.83 mph (134.9 km/h) |
| 100 mph (160.93 km/h) | 88.24 mph (142 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
