Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/45-17 | 255/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.68 (652.3) | 25.03 (635.8) | -0.65 (-16.5) -2.5% |
| Width inches (mm) | 9.65 (245) | 10.04 (255) | 0.39 (10) 4.1% |
| Circum. inches (mm) | 80.68 (2049.26) | 78.64 (1997.42) | -2.04 (-51.84) -2.5% |
| Sidewall Height inches (mm) | 4.34 (110.25) | 4.02 (102) | -0.32 (-8.25) -7.5% |
| Revolutions per mile (km) | 785.33 (487.98) | 805.71 (500.64) | 20.38 (12.66) 2.6% |
255/40-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.49 mph (31.37 km/h) |
| 25 mph (40.23 km/h) | 24.37 mph (39.22 km/h) |
| 30 mph (48.28 km/h) | 29.24 mph (47.06 km/h) |
| 35 mph (56.33 km/h) | 34.11 mph (54.9 km/h) |
| 40 mph (64.37 km/h) | 38.99 mph (62.75 km/h) |
| 45 mph (72.42 km/h) | 43.86 mph (70.59 km/h) |
| 50 mph (80.47 km/h) | 48.74 mph (78.43 km/h) |
| 55 mph (88.51 km/h) | 53.61 mph (86.28 km/h) |
| 60 mph (96.56 km/h) | 58.48 mph (94.12 km/h) |
| 65 mph (104.61 km/h) | 63.36 mph (101.96 km/h) |
| 70 mph (112.65 km/h) | 68.23 mph (109.8 km/h) |
| 75 mph (120.7 km/h) | 73.1 mph (117.65 km/h) |
| 80 mph (128.75 km/h) | 77.98 mph (125.49 km/h) |
| 85 mph (136.79 km/h) | 82.85 mph (133.33 km/h) |
| 90 mph (144.84 km/h) | 87.72 mph (141.18 km/h) |
| 95 mph (152.89 km/h) | 92.6 mph (149.02 km/h) |
| 100 mph (160.93 km/h) | 97.47 mph (156.86 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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