Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 50/80-17 | 67/90-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.15 (511.8) | 21.75 (552.4) | 1.6 (40.6) 7.9% |
| Width inches (mm) | 1.97 (50) | 2.64 (67) | 0.67 (17) 34% |
| Circum. inches (mm) | 63.3 (1607.87) | 68.32 (1735.42) | 5.02 (127.55) 7.9% |
| Sidewall Height inches (mm) | 1.57 (40) | 2.37 (60.3) | 0.8 (20.3) 50.8% |
| Revolutions per mile (km) | 1000.92 (621.94) | 927.35 (576.23) | -73.56 (-45.71) -7.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.59 mph (34.74 km/h) |
| 25 mph (40.23 km/h) | 26.98 mph (43.43 km/h) |
| 30 mph (48.28 km/h) | 32.38 mph (52.11 km/h) |
| 35 mph (56.33 km/h) | 37.78 mph (60.8 km/h) |
| 40 mph (64.37 km/h) | 43.17 mph (69.48 km/h) |
| 45 mph (72.42 km/h) | 48.57 mph (78.17 km/h) |
| 50 mph (80.47 km/h) | 53.97 mph (86.85 km/h) |
| 55 mph (88.51 km/h) | 59.36 mph (95.54 km/h) |
| 60 mph (96.56 km/h) | 64.76 mph (104.22 km/h) |
| 65 mph (104.61 km/h) | 70.16 mph (112.91 km/h) |
| 70 mph (112.65 km/h) | 75.55 mph (121.59 km/h) |
| 75 mph (120.7 km/h) | 80.95 mph (130.28 km/h) |
| 80 mph (128.75 km/h) | 86.35 mph (138.96 km/h) |
| 85 mph (136.79 km/h) | 91.74 mph (147.65 km/h) |
| 90 mph (144.84 km/h) | 97.14 mph (156.33 km/h) |
| 95 mph (152.89 km/h) | 102.54 mph (165.02 km/h) |
| 100 mph (160.93 km/h) | 107.93 mph (173.7 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
