Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/40-17 | 285/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.35 (643.8) | 25.98 (659.8) | 0.63 (16) 2.5% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 79.63 (2022.56) | 81.61 (2072.82) | 1.98 (50.27) 2.5% |
| Sidewall Height inches (mm) | 4.17 (106) | 4.49 (114) | 0.31 (8) 7.5% |
| Revolutions per mile (km) | 795.7 (494.42) | 776.4 (482.43) | -19.3 (-11.99) -2.4% |
285/40-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.5 mph (32.99 km/h) |
| 25 mph (40.23 km/h) | 25.62 mph (41.23 km/h) |
| 30 mph (48.28 km/h) | 30.75 mph (49.48 km/h) |
| 35 mph (56.33 km/h) | 35.87 mph (57.73 km/h) |
| 40 mph (64.37 km/h) | 40.99 mph (65.97 km/h) |
| 45 mph (72.42 km/h) | 46.12 mph (74.22 km/h) |
| 50 mph (80.47 km/h) | 51.24 mph (82.47 km/h) |
| 55 mph (88.51 km/h) | 56.37 mph (90.71 km/h) |
| 60 mph (96.56 km/h) | 61.49 mph (98.96 km/h) |
| 65 mph (104.61 km/h) | 66.62 mph (107.21 km/h) |
| 70 mph (112.65 km/h) | 71.74 mph (115.45 km/h) |
| 75 mph (120.7 km/h) | 76.86 mph (123.7 km/h) |
| 80 mph (128.75 km/h) | 81.99 mph (131.95 km/h) |
| 85 mph (136.79 km/h) | 87.11 mph (140.19 km/h) |
| 90 mph (144.84 km/h) | 92.24 mph (148.44 km/h) |
| 95 mph (152.89 km/h) | 97.36 mph (156.69 km/h) |
| 100 mph (160.93 km/h) | 102.49 mph (164.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1976 | 2295 | 2472 | 2581 | 2699 | 2783 | 2875 | 2985 | 3136 | 3287 | 3456 | 3590 | 3834 | 4103 | 4313 | 4448 | 4523 | 4801 | 5188 | 6028 |
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