Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/45-17 | 255/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.68 (652.3) | 31.06 (788.8) | 5.37 (136.5) 20.9% |
| Width inches (mm) | 9.65 (245) | 10.04 (255) | 0.39 (10) 4.1% |
| Circum. inches (mm) | 80.68 (2049.26) | 97.56 (2478.09) | 16.88 (428.83) 20.9% |
| Sidewall Height inches (mm) | 4.34 (110.25) | 7.03 (178.5) | 2.69 (68.25) 61.9% |
| Revolutions per mile (km) | 785.33 (487.98) | 649.43 (403.54) | -135.9 (-84.44) -17.3% |
255/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.19 mph (38.92 km/h) |
| 25 mph (40.23 km/h) | 30.23 mph (48.65 km/h) |
| 30 mph (48.28 km/h) | 36.28 mph (58.38 km/h) |
| 35 mph (56.33 km/h) | 42.32 mph (68.11 km/h) |
| 40 mph (64.37 km/h) | 48.37 mph (77.84 km/h) |
| 45 mph (72.42 km/h) | 54.42 mph (87.58 km/h) |
| 50 mph (80.47 km/h) | 60.46 mph (97.31 km/h) |
| 55 mph (88.51 km/h) | 66.51 mph (107.04 km/h) |
| 60 mph (96.56 km/h) | 72.56 mph (116.77 km/h) |
| 65 mph (104.61 km/h) | 78.6 mph (126.5 km/h) |
| 70 mph (112.65 km/h) | 84.65 mph (136.23 km/h) |
| 75 mph (120.7 km/h) | 90.69 mph (145.96 km/h) |
| 80 mph (128.75 km/h) | 96.74 mph (155.69 km/h) |
| 85 mph (136.79 km/h) | 102.79 mph (165.42 km/h) |
| 90 mph (144.84 km/h) | 108.83 mph (175.15 km/h) |
| 95 mph (152.89 km/h) | 114.88 mph (184.88 km/h) |
| 100 mph (160.93 km/h) | 120.93 mph (194.61 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1653 | 1920 | 2068 | 2159 | 2257 | 2328 | 2405 | 2497 | 2623 | 2750 | 2890 | 3003 | 3207 | 3432 | 3608 | 3720 | 3784 | 4016 | 4339 | 5042 |
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