Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/60-20 | 245/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.57 (802) | 29.65 (753) | -1.93 (-49) -6.1% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 99.2 (2519.56) | 93.13 (2365.62) | -6.06 (-153.94) -6.1% |
| Sidewall Height inches (mm) | 5.79 (147) | 4.82 (122.5) | -0.96 (-24.5) -16.7% |
| Revolutions per mile (km) | 638.74 (396.89) | 680.31 (422.72) | 41.56 (25.83) 6.5% |
245/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.78 mph (30.22 km/h) |
| 25 mph (40.23 km/h) | 23.47 mph (37.78 km/h) |
| 30 mph (48.28 km/h) | 28.17 mph (45.33 km/h) |
| 35 mph (56.33 km/h) | 32.86 mph (52.89 km/h) |
| 40 mph (64.37 km/h) | 37.56 mph (60.44 km/h) |
| 45 mph (72.42 km/h) | 42.25 mph (68 km/h) |
| 50 mph (80.47 km/h) | 46.95 mph (75.55 km/h) |
| 55 mph (88.51 km/h) | 51.64 mph (83.11 km/h) |
| 60 mph (96.56 km/h) | 56.33 mph (90.66 km/h) |
| 65 mph (104.61 km/h) | 61.03 mph (98.22 km/h) |
| 70 mph (112.65 km/h) | 65.72 mph (105.77 km/h) |
| 75 mph (120.7 km/h) | 70.42 mph (113.33 km/h) |
| 80 mph (128.75 km/h) | 75.11 mph (120.88 km/h) |
| 85 mph (136.79 km/h) | 79.81 mph (128.44 km/h) |
| 90 mph (144.84 km/h) | 84.5 mph (135.99 km/h) |
| 95 mph (152.89 km/h) | 89.2 mph (143.55 km/h) |
| 100 mph (160.93 km/h) | 93.89 mph (151.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1731 | 2011 | 2166 | 2262 | 2365 | 2438 | 2520 | 2615 | 2748 | 2881 | 3028 | 3146 | 3359 | 3595 | 3779 | 3897 | 3963 | 4207 | 4545 | 5282 |
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