Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/60-20 | 275/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.57 (802) | 31.91 (810.5) | 0.33 (8.5) 1.1% |
| Width inches (mm) | 9.65 (245) | 10.83 (275) | 1.18 (30) 12.2% |
| Circum. inches (mm) | 99.2 (2519.56) | 100.25 (2546.26) | 1.05 (26.7) 1.1% |
| Sidewall Height inches (mm) | 5.79 (147) | 5.95 (151.25) | 0.17 (4.25) 2.9% |
| Revolutions per mile (km) | 638.74 (396.89) | 632.04 (392.73) | -6.7 (-4.16) -1% |
275/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.21 mph (32.53 km/h) |
| 25 mph (40.23 km/h) | 25.26 mph (40.66 km/h) |
| 30 mph (48.28 km/h) | 30.32 mph (48.79 km/h) |
| 35 mph (56.33 km/h) | 35.37 mph (56.92 km/h) |
| 40 mph (64.37 km/h) | 40.42 mph (65.06 km/h) |
| 45 mph (72.42 km/h) | 45.48 mph (73.19 km/h) |
| 50 mph (80.47 km/h) | 50.53 mph (81.32 km/h) |
| 55 mph (88.51 km/h) | 55.58 mph (89.45 km/h) |
| 60 mph (96.56 km/h) | 60.64 mph (97.58 km/h) |
| 65 mph (104.61 km/h) | 65.69 mph (105.72 km/h) |
| 70 mph (112.65 km/h) | 70.74 mph (113.85 km/h) |
| 75 mph (120.7 km/h) | 75.79 mph (121.98 km/h) |
| 80 mph (128.75 km/h) | 80.85 mph (130.11 km/h) |
| 85 mph (136.79 km/h) | 85.9 mph (138.24 km/h) |
| 90 mph (144.84 km/h) | 90.95 mph (146.38 km/h) |
| 95 mph (152.89 km/h) | 96.01 mph (154.51 km/h) |
| 100 mph (160.93 km/h) | 101.06 mph (162.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1608 | 1869 | 2012 | 2101 | 2197 | 2265 | 2341 | 2430 | 2553 | 2676 | 2813 | 2923 | 3121 | 3340 | 3511 | 3621 | 3682 | 3908 | 4223 | 4907 |
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