Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/40-17 | 245/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.03 (635.8) | 25.68 (652.3) | 0.65 (16.5) 2.6% |
| Width inches (mm) | 10.04 (255) | 9.65 (245) | -0.39 (-10) -3.9% |
| Circum. inches (mm) | 78.64 (1997.42) | 80.68 (2049.26) | 2.04 (51.84) 2.6% |
| Sidewall Height inches (mm) | 4.02 (102) | 4.34 (110.25) | 0.32 (8.25) 8.1% |
| Revolutions per mile (km) | 805.71 (500.64) | 785.33 (487.98) | -20.38 (-12.66) -2.5% |
245/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.52 mph (33.02 km/h) |
| 25 mph (40.23 km/h) | 25.65 mph (41.28 km/h) |
| 30 mph (48.28 km/h) | 30.78 mph (49.53 km/h) |
| 35 mph (56.33 km/h) | 35.91 mph (57.79 km/h) |
| 40 mph (64.37 km/h) | 41.04 mph (66.04 km/h) |
| 45 mph (72.42 km/h) | 46.17 mph (74.3 km/h) |
| 50 mph (80.47 km/h) | 51.3 mph (82.56 km/h) |
| 55 mph (88.51 km/h) | 56.43 mph (90.81 km/h) |
| 60 mph (96.56 km/h) | 61.56 mph (99.07 km/h) |
| 65 mph (104.61 km/h) | 66.69 mph (107.32 km/h) |
| 70 mph (112.65 km/h) | 71.82 mph (115.58 km/h) |
| 75 mph (120.7 km/h) | 76.95 mph (123.83 km/h) |
| 80 mph (128.75 km/h) | 82.08 mph (132.09 km/h) |
| 85 mph (136.79 km/h) | 87.21 mph (140.34 km/h) |
| 90 mph (144.84 km/h) | 92.34 mph (148.6 km/h) |
| 95 mph (152.89 km/h) | 97.47 mph (156.86 km/h) |
| 100 mph (160.93 km/h) | 102.6 mph (165.11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2322 | 2500 | 2611 | 2730 | 2815 | 2908 | 3019 | 3172 | 3325 | 3495 | 3631 | 3878 | 4150 | 4363 | 4499 | 4575 | 4856 | 5247 | 6098 |
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