Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/55-20 | 275/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.91 (810.5) | 34.07 (865.5) | 2.17 (55) 6.8% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 100.25 (2546.26) | 107.05 (2719.05) | 6.8 (172.79) 6.8% |
| Sidewall Height inches (mm) | 5.95 (151.25) | 7.04 (178.75) | 1.08 (27.5) 18.2% |
| Revolutions per mile (km) | 632.04 (392.73) | 591.88 (367.78) | -40.16 (-24.96) -6.4% |
275/65-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.36 mph (34.37 km/h) |
| 25 mph (40.23 km/h) | 26.7 mph (42.96 km/h) |
| 30 mph (48.28 km/h) | 32.04 mph (51.56 km/h) |
| 35 mph (56.33 km/h) | 37.38 mph (60.15 km/h) |
| 40 mph (64.37 km/h) | 42.71 mph (68.74 km/h) |
| 45 mph (72.42 km/h) | 48.05 mph (77.34 km/h) |
| 50 mph (80.47 km/h) | 53.39 mph (85.93 km/h) |
| 55 mph (88.51 km/h) | 58.73 mph (94.52 km/h) |
| 60 mph (96.56 km/h) | 64.07 mph (103.11 km/h) |
| 65 mph (104.61 km/h) | 69.41 mph (111.71 km/h) |
| 70 mph (112.65 km/h) | 74.75 mph (120.3 km/h) |
| 75 mph (120.7 km/h) | 80.09 mph (128.89 km/h) |
| 80 mph (128.75 km/h) | 85.43 mph (137.48 km/h) |
| 85 mph (136.79 km/h) | 90.77 mph (146.08 km/h) |
| 90 mph (144.84 km/h) | 96.11 mph (154.67 km/h) |
| 95 mph (152.89 km/h) | 101.45 mph (163.26 km/h) |
| 100 mph (160.93 km/h) | 106.79 mph (171.86 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1506 | 1750 | 1884 | 1968 | 2057 | 2122 | 2192 | 2275 | 2391 | 2506 | 2634 | 2737 | 2923 | 3128 | 3288 | 3391 | 3448 | 3660 | 3955 | 4596 |
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