Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/80-20 | 275/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.32 (948) | 34.07 (865.5) | -3.25 (-82.5) -8.7% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 117.25 (2978.23) | 107.05 (2719.05) | -10.2 (-259.18) -8.7% |
| Sidewall Height inches (mm) | 8.66 (220) | 7.04 (178.75) | -1.62 (-41.25) -18.8% |
| Revolutions per mile (km) | 540.37 (335.77) | 591.88 (367.78) | 51.51 (32.01) 9.5% |
275/65-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.26 mph (29.39 km/h) |
| 25 mph (40.23 km/h) | 22.82 mph (36.73 km/h) |
| 30 mph (48.28 km/h) | 27.39 mph (44.08 km/h) |
| 35 mph (56.33 km/h) | 31.95 mph (51.43 km/h) |
| 40 mph (64.37 km/h) | 36.52 mph (58.77 km/h) |
| 45 mph (72.42 km/h) | 41.08 mph (66.12 km/h) |
| 50 mph (80.47 km/h) | 45.65 mph (73.46 km/h) |
| 55 mph (88.51 km/h) | 50.21 mph (80.81 km/h) |
| 60 mph (96.56 km/h) | 54.78 mph (88.16 km/h) |
| 65 mph (104.61 km/h) | 59.34 mph (95.5 km/h) |
| 70 mph (112.65 km/h) | 63.91 mph (102.85 km/h) |
| 75 mph (120.7 km/h) | 68.47 mph (110.2 km/h) |
| 80 mph (128.75 km/h) | 73.04 mph (117.54 km/h) |
| 85 mph (136.79 km/h) | 77.6 mph (124.89 km/h) |
| 90 mph (144.84 km/h) | 82.17 mph (132.24 km/h) |
| 95 mph (152.89 km/h) | 86.73 mph (139.58 km/h) |
| 100 mph (160.93 km/h) | 91.3 mph (146.93 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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