Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-17 | 255/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.98 (659.8) | 27.04 (686.8) | 1.06 (27) 4.1% |
| Width inches (mm) | 11.22 (285) | 10.04 (255) | -1.18 (-30) -10.5% |
| Circum. inches (mm) | 81.61 (2072.82) | 84.95 (2157.65) | 3.34 (84.82) 4.1% |
| Sidewall Height inches (mm) | 4.49 (114) | 5.02 (127.5) | 0.53 (13.5) 11.8% |
| Revolutions per mile (km) | 776.4 (482.43) | 745.88 (463.47) | -30.52 (-18.97) -3.9% |
255/50-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.82 mph (33.5 km/h) |
| 25 mph (40.23 km/h) | 26.02 mph (41.88 km/h) |
| 30 mph (48.28 km/h) | 31.23 mph (50.26 km/h) |
| 35 mph (56.33 km/h) | 36.43 mph (58.63 km/h) |
| 40 mph (64.37 km/h) | 41.64 mph (67.01 km/h) |
| 45 mph (72.42 km/h) | 46.84 mph (75.38 km/h) |
| 50 mph (80.47 km/h) | 52.05 mph (83.76 km/h) |
| 55 mph (88.51 km/h) | 57.25 mph (92.14 km/h) |
| 60 mph (96.56 km/h) | 62.46 mph (100.51 km/h) |
| 65 mph (104.61 km/h) | 67.66 mph (108.89 km/h) |
| 70 mph (112.65 km/h) | 72.86 mph (117.26 km/h) |
| 75 mph (120.7 km/h) | 78.07 mph (125.64 km/h) |
| 80 mph (128.75 km/h) | 83.27 mph (134.02 km/h) |
| 85 mph (136.79 km/h) | 88.48 mph (142.39 km/h) |
| 90 mph (144.84 km/h) | 93.68 mph (150.77 km/h) |
| 95 mph (152.89 km/h) | 98.89 mph (159.14 km/h) |
| 100 mph (160.93 km/h) | 104.09 mph (167.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1898 | 2205 | 2375 | 2480 | 2593 | 2674 | 2762 | 2867 | 3013 | 3158 | 3320 | 3449 | 3683 | 3942 | 4144 | 4273 | 4345 | 4612 | 4984 | 5791 |
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