Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/50-20 | 275/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.83 (783) | 29.74 (755.5) | -1.08 (-27.5) -3.5% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 96.85 (2459.87) | 93.44 (2373.47) | -3.4 (-86.39) -3.5% |
| Sidewall Height inches (mm) | 5.41 (137.5) | 4.87 (123.75) | -0.54 (-13.75) -10% |
| Revolutions per mile (km) | 654.24 (406.53) | 678.05 (421.32) | 23.81 (14.8) 3.6% |
275/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.3 mph (31.06 km/h) |
| 25 mph (40.23 km/h) | 24.12 mph (38.82 km/h) |
| 30 mph (48.28 km/h) | 28.95 mph (46.58 km/h) |
| 35 mph (56.33 km/h) | 33.77 mph (54.35 km/h) |
| 40 mph (64.37 km/h) | 38.6 mph (62.11 km/h) |
| 45 mph (72.42 km/h) | 43.42 mph (69.88 km/h) |
| 50 mph (80.47 km/h) | 48.24 mph (77.64 km/h) |
| 55 mph (88.51 km/h) | 53.07 mph (85.41 km/h) |
| 60 mph (96.56 km/h) | 57.89 mph (93.17 km/h) |
| 65 mph (104.61 km/h) | 62.72 mph (100.93 km/h) |
| 70 mph (112.65 km/h) | 67.54 mph (108.7 km/h) |
| 75 mph (120.7 km/h) | 72.37 mph (116.46 km/h) |
| 80 mph (128.75 km/h) | 77.19 mph (124.23 km/h) |
| 85 mph (136.79 km/h) | 82.01 mph (131.99 km/h) |
| 90 mph (144.84 km/h) | 86.84 mph (139.75 km/h) |
| 95 mph (152.89 km/h) | 91.66 mph (147.52 km/h) |
| 100 mph (160.93 km/h) | 96.49 mph (155.28 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1726 | 2005 | 2159 | 2254 | 2357 | 2430 | 2511 | 2607 | 2739 | 2871 | 3018 | 3135 | 3348 | 3583 | 3767 | 3884 | 3950 | 4193 | 4530 | 5265 |
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