Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/55-20 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.64 (854.5) | 32.99 (838) | -0.65 (-16.5) -1.9% |
| Width inches (mm) | 12.4 (315) | 10.83 (275) | -1.57 (-40) -12.7% |
| Circum. inches (mm) | 105.69 (2684.49) | 103.65 (2632.65) | -2.04 (-51.84) -1.9% |
| Sidewall Height inches (mm) | 6.82 (173.25) | 6.5 (165) | -0.32 (-8.25) -4.8% |
| Revolutions per mile (km) | 599.5 (372.51) | 611.3 (379.84) | 11.8 (7.33) 2% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.61 mph (31.57 km/h) |
| 25 mph (40.23 km/h) | 24.52 mph (39.46 km/h) |
| 30 mph (48.28 km/h) | 29.42 mph (47.35 km/h) |
| 35 mph (56.33 km/h) | 34.32 mph (55.24 km/h) |
| 40 mph (64.37 km/h) | 39.23 mph (63.13 km/h) |
| 45 mph (72.42 km/h) | 44.13 mph (71.02 km/h) |
| 50 mph (80.47 km/h) | 49.03 mph (78.91 km/h) |
| 55 mph (88.51 km/h) | 53.94 mph (86.8 km/h) |
| 60 mph (96.56 km/h) | 58.84 mph (94.7 km/h) |
| 65 mph (104.61 km/h) | 63.74 mph (102.59 km/h) |
| 70 mph (112.65 km/h) | 68.65 mph (110.48 km/h) |
| 75 mph (120.7 km/h) | 73.55 mph (118.37 km/h) |
| 80 mph (128.75 km/h) | 78.46 mph (126.26 km/h) |
| 85 mph (136.79 km/h) | 83.36 mph (134.15 km/h) |
| 90 mph (144.84 km/h) | 88.26 mph (142.04 km/h) |
| 95 mph (152.89 km/h) | 93.17 mph (149.94 km/h) |
| 100 mph (160.93 km/h) | 98.07 mph (157.83 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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