Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/60-20 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.41 (874) | 32.99 (838) | -1.42 (-36) -4.1% |
| Width inches (mm) | 12.01 (305) | 10.83 (275) | -1.18 (-30) -9.8% |
| Circum. inches (mm) | 108.1 (2745.75) | 103.65 (2632.65) | -4.45 (-113.1) -4.1% |
| Sidewall Height inches (mm) | 7.2 (183) | 6.5 (165) | -0.71 (-18) -9.8% |
| Revolutions per mile (km) | 586.12 (364.2) | 611.3 (379.84) | 25.18 (15.65) 4.3% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.18 mph (30.86 km/h) |
| 25 mph (40.23 km/h) | 23.97 mph (38.58 km/h) |
| 30 mph (48.28 km/h) | 28.76 mph (46.29 km/h) |
| 35 mph (56.33 km/h) | 33.56 mph (54.01 km/h) |
| 40 mph (64.37 km/h) | 38.35 mph (61.72 km/h) |
| 45 mph (72.42 km/h) | 43.15 mph (69.44 km/h) |
| 50 mph (80.47 km/h) | 47.94 mph (77.15 km/h) |
| 55 mph (88.51 km/h) | 52.73 mph (84.87 km/h) |
| 60 mph (96.56 km/h) | 57.53 mph (92.58 km/h) |
| 65 mph (104.61 km/h) | 62.32 mph (100.3 km/h) |
| 70 mph (112.65 km/h) | 67.12 mph (108.01 km/h) |
| 75 mph (120.7 km/h) | 71.91 mph (115.73 km/h) |
| 80 mph (128.75 km/h) | 76.7 mph (123.44 km/h) |
| 85 mph (136.79 km/h) | 81.5 mph (131.16 km/h) |
| 90 mph (144.84 km/h) | 86.29 mph (138.88 km/h) |
| 95 mph (152.89 km/h) | 91.09 mph (146.59 km/h) |
| 100 mph (160.93 km/h) | 95.88 mph (154.31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1556 | 1807 | 1946 | 2032 | 2125 | 2191 | 2264 | 2350 | 2469 | 2588 | 2721 | 2827 | 3019 | 3230 | 3396 | 3502 | 3561 | 3780 | 4084 | 4746 |
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