Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/40-17 | 255/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.46 (595.8) | 25.03 (635.8) | 1.57 (40) 6.7% |
| Width inches (mm) | 8.07 (205) | 10.04 (255) | 1.97 (50) 24.4% |
| Circum. inches (mm) | 73.69 (1871.76) | 78.64 (1997.42) | 4.95 (125.66) 6.7% |
| Sidewall Height inches (mm) | 3.23 (82) | 4.02 (102) | 0.79 (20) 24.4% |
| Revolutions per mile (km) | 859.8 (534.26) | 805.71 (500.64) | -54.09 (-33.61) -6.3% |
255/40-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.34 mph (34.35 km/h) |
| 25 mph (40.23 km/h) | 26.68 mph (42.93 km/h) |
| 30 mph (48.28 km/h) | 32.01 mph (51.52 km/h) |
| 35 mph (56.33 km/h) | 37.35 mph (60.11 km/h) |
| 40 mph (64.37 km/h) | 42.69 mph (68.7 km/h) |
| 45 mph (72.42 km/h) | 48.02 mph (77.28 km/h) |
| 50 mph (80.47 km/h) | 53.36 mph (85.87 km/h) |
| 55 mph (88.51 km/h) | 58.69 mph (94.46 km/h) |
| 60 mph (96.56 km/h) | 64.03 mph (103.04 km/h) |
| 65 mph (104.61 km/h) | 69.36 mph (111.63 km/h) |
| 70 mph (112.65 km/h) | 74.7 mph (120.22 km/h) |
| 75 mph (120.7 km/h) | 80.04 mph (128.8 km/h) |
| 80 mph (128.75 km/h) | 85.37 mph (137.39 km/h) |
| 85 mph (136.79 km/h) | 90.71 mph (145.98 km/h) |
| 90 mph (144.84 km/h) | 96.04 mph (154.57 km/h) |
| 95 mph (152.89 km/h) | 101.38 mph (163.15 km/h) |
| 100 mph (160.93 km/h) | 106.71 mph (171.74 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2050 | 2382 | 2565 | 2679 | 2801 | 2888 | 2984 | 3097 | 3254 | 3411 | 3586 | 3726 | 3979 | 4258 | 4476 | 4616 | 4694 | 4982 | 5383 | 6256 |
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