Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/50-16 | 180/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.45 (646.4) | 24.8 (629.8) | -0.65 (-16.6) -2.6% |
| Width inches (mm) | 9.45 (240) | 7.09 (180) | -2.36 (-60) -25% |
| Circum. inches (mm) | 79.95 (2030.73) | 77.9 (1978.58) | -2.05 (-52.15) -2.6% |
| Sidewall Height inches (mm) | 4.72 (120) | 3.9 (99) | -0.83 (-21) -17.5% |
| Revolutions per mile (km) | 792.5 (492.43) | 813.39 (505.41) | 20.89 (12.98) 2.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.49 mph (31.36 km/h) |
| 25 mph (40.23 km/h) | 24.36 mph (39.2 km/h) |
| 30 mph (48.28 km/h) | 29.23 mph (47.04 km/h) |
| 35 mph (56.33 km/h) | 34.1 mph (54.88 km/h) |
| 40 mph (64.37 km/h) | 38.97 mph (62.72 km/h) |
| 45 mph (72.42 km/h) | 43.84 mph (70.56 km/h) |
| 50 mph (80.47 km/h) | 48.72 mph (78.4 km/h) |
| 55 mph (88.51 km/h) | 53.59 mph (86.24 km/h) |
| 60 mph (96.56 km/h) | 58.46 mph (94.08 km/h) |
| 65 mph (104.61 km/h) | 63.33 mph (101.92 km/h) |
| 70 mph (112.65 km/h) | 68.2 mph (109.76 km/h) |
| 75 mph (120.7 km/h) | 73.07 mph (117.6 km/h) |
| 80 mph (128.75 km/h) | 77.95 mph (125.44 km/h) |
| 85 mph (136.79 km/h) | 82.82 mph (133.28 km/h) |
| 90 mph (144.84 km/h) | 87.69 mph (141.12 km/h) |
| 95 mph (152.89 km/h) | 92.56 mph (148.96 km/h) |
| 100 mph (160.93 km/h) | 97.43 mph (156.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2070 | 2405 | 2590 | 2704 | 2827 | 2915 | 3012 | 3127 | 3285 | 3444 | 3620 | 3761 | 4017 | 4298 | 4519 | 4660 | 4739 | 5029 | 5435 | 6315 |
Better Fuel Economy Factory Ratios Increased Power
