Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/60-18 | 245/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.57 (751.2) | 29.65 (753) | 0.07 (1.8) 0.2% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 92.91 (2359.96) | 93.13 (2365.62) | 0.22 (5.65) 0.2% |
| Sidewall Height inches (mm) | 5.79 (147) | 4.82 (122.5) | -0.96 (-24.5) -16.7% |
| Revolutions per mile (km) | 681.94 (423.73) | 680.31 (422.72) | -1.63 (-1.01) -0.2% |
245/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.05 mph (32.26 km/h) |
| 25 mph (40.23 km/h) | 25.06 mph (40.33 km/h) |
| 30 mph (48.28 km/h) | 30.07 mph (48.4 km/h) |
| 35 mph (56.33 km/h) | 35.08 mph (56.46 km/h) |
| 40 mph (64.37 km/h) | 40.1 mph (64.53 km/h) |
| 45 mph (72.42 km/h) | 45.11 mph (72.59 km/h) |
| 50 mph (80.47 km/h) | 50.12 mph (80.66 km/h) |
| 55 mph (88.51 km/h) | 55.13 mph (88.73 km/h) |
| 60 mph (96.56 km/h) | 60.14 mph (96.79 km/h) |
| 65 mph (104.61 km/h) | 65.16 mph (104.86 km/h) |
| 70 mph (112.65 km/h) | 70.17 mph (112.92 km/h) |
| 75 mph (120.7 km/h) | 75.18 mph (120.99 km/h) |
| 80 mph (128.75 km/h) | 80.19 mph (129.06 km/h) |
| 85 mph (136.79 km/h) | 85.2 mph (137.12 km/h) |
| 90 mph (144.84 km/h) | 90.22 mph (145.19 km/h) |
| 95 mph (152.89 km/h) | 95.23 mph (153.25 km/h) |
| 100 mph (160.93 km/h) | 100.24 mph (161.32 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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