Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/25-19 | 255/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.2 (640.1) | 25.03 (635.8) | -0.17 (-4.3) -0.7% |
| Width inches (mm) | 12.4 (315) | 10.04 (255) | -2.36 (-60) -19% |
| Circum. inches (mm) | 79.17 (2010.93) | 78.64 (1997.42) | -0.53 (-13.51) -0.7% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 4.02 (102) | 0.92 (23.25) 29.5% |
| Revolutions per mile (km) | 800.3 (497.28) | 805.71 (500.64) | 5.41 (3.36) 0.7% |
255/40-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.87 mph (31.97 km/h) |
| 25 mph (40.23 km/h) | 24.83 mph (39.96 km/h) |
| 30 mph (48.28 km/h) | 29.8 mph (47.96 km/h) |
| 35 mph (56.33 km/h) | 34.76 mph (55.95 km/h) |
| 40 mph (64.37 km/h) | 39.73 mph (63.94 km/h) |
| 45 mph (72.42 km/h) | 44.7 mph (71.93 km/h) |
| 50 mph (80.47 km/h) | 49.66 mph (79.93 km/h) |
| 55 mph (88.51 km/h) | 54.63 mph (87.92 km/h) |
| 60 mph (96.56 km/h) | 59.6 mph (95.91 km/h) |
| 65 mph (104.61 km/h) | 64.56 mph (103.9 km/h) |
| 70 mph (112.65 km/h) | 69.53 mph (111.9 km/h) |
| 75 mph (120.7 km/h) | 74.5 mph (119.89 km/h) |
| 80 mph (128.75 km/h) | 79.46 mph (127.88 km/h) |
| 85 mph (136.79 km/h) | 84.43 mph (135.88 km/h) |
| 90 mph (144.84 km/h) | 89.4 mph (143.87 km/h) |
| 95 mph (152.89 km/h) | 94.36 mph (151.86 km/h) |
| 100 mph (160.93 km/h) | 99.33 mph (159.85 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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