Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-20 | 275/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.71 (907) | 34.07 (865.5) | -1.63 (-41.5) -4.6% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 112.18 (2849.42) | 107.05 (2719.05) | -5.13 (-130.38) -4.6% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 7.04 (178.75) | -0.82 (-20.75) -10.4% |
| Revolutions per mile (km) | 564.8 (350.95) | 591.88 (367.78) | 27.08 (16.83) 4.8% |
275/65-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.08 mph (30.71 km/h) |
| 25 mph (40.23 km/h) | 23.86 mph (38.39 km/h) |
| 30 mph (48.28 km/h) | 28.63 mph (46.07 km/h) |
| 35 mph (56.33 km/h) | 33.4 mph (53.75 km/h) |
| 40 mph (64.37 km/h) | 38.17 mph (61.43 km/h) |
| 45 mph (72.42 km/h) | 42.94 mph (69.11 km/h) |
| 50 mph (80.47 km/h) | 47.71 mph (76.79 km/h) |
| 55 mph (88.51 km/h) | 52.48 mph (84.46 km/h) |
| 60 mph (96.56 km/h) | 57.25 mph (92.14 km/h) |
| 65 mph (104.61 km/h) | 62.03 mph (99.82 km/h) |
| 70 mph (112.65 km/h) | 66.8 mph (107.5 km/h) |
| 75 mph (120.7 km/h) | 71.57 mph (115.18 km/h) |
| 80 mph (128.75 km/h) | 76.34 mph (122.86 km/h) |
| 85 mph (136.79 km/h) | 81.11 mph (130.54 km/h) |
| 90 mph (144.84 km/h) | 85.88 mph (138.21 km/h) |
| 95 mph (152.89 km/h) | 90.65 mph (145.89 km/h) |
| 100 mph (160.93 km/h) | 95.42 mph (153.57 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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