Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/55-20 | 245/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.78 (832.5) | 31.47 (799.3) | -1.31 (-33.2) -4% |
| Width inches (mm) | 11.61 (295) | 9.65 (245) | -1.97 (-50) -16.9% |
| Circum. inches (mm) | 102.97 (2615.38) | 98.86 (2511.08) | -4.11 (-104.3) -4% |
| Sidewall Height inches (mm) | 6.39 (162.25) | 7.23 (183.75) | 0.85 (21.5) 13.3% |
| Revolutions per mile (km) | 615.34 (382.35) | 640.9 (398.24) | 25.56 (15.88) 4.2% |
245/75-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.2 mph (30.9 km/h) |
| 25 mph (40.23 km/h) | 24 mph (38.63 km/h) |
| 30 mph (48.28 km/h) | 28.8 mph (46.35 km/h) |
| 35 mph (56.33 km/h) | 33.6 mph (54.08 km/h) |
| 40 mph (64.37 km/h) | 38.4 mph (61.81 km/h) |
| 45 mph (72.42 km/h) | 43.21 mph (69.53 km/h) |
| 50 mph (80.47 km/h) | 48.01 mph (77.26 km/h) |
| 55 mph (88.51 km/h) | 52.81 mph (84.98 km/h) |
| 60 mph (96.56 km/h) | 57.61 mph (92.71 km/h) |
| 65 mph (104.61 km/h) | 62.41 mph (100.44 km/h) |
| 70 mph (112.65 km/h) | 67.21 mph (108.16 km/h) |
| 75 mph (120.7 km/h) | 72.01 mph (115.89 km/h) |
| 80 mph (128.75 km/h) | 76.81 mph (123.61 km/h) |
| 85 mph (136.79 km/h) | 81.61 mph (131.34 km/h) |
| 90 mph (144.84 km/h) | 86.41 mph (139.06 km/h) |
| 95 mph (152.89 km/h) | 91.21 mph (146.79 km/h) |
| 100 mph (160.93 km/h) | 96.01 mph (154.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1631 | 1895 | 2040 | 2131 | 2228 | 2297 | 2374 | 2464 | 2589 | 2714 | 2852 | 2963 | 3165 | 3387 | 3560 | 3671 | 3734 | 3963 | 4282 | 4976 |
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