Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/55-20 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.04 (788.5) | 32.99 (838) | 1.95 (49.5) 6.3% |
| Width inches (mm) | 10.04 (255) | 10.83 (275) | 0.79 (20) 7.8% |
| Circum. inches (mm) | 97.53 (2477.15) | 103.65 (2632.65) | 6.12 (155.51) 6.3% |
| Sidewall Height inches (mm) | 5.52 (140.25) | 6.5 (165) | 0.97 (24.75) 17.6% |
| Revolutions per mile (km) | 649.68 (403.69) | 611.3 (379.84) | -38.38 (-23.85) -5.9% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.26 mph (34.21 km/h) |
| 25 mph (40.23 km/h) | 26.57 mph (42.76 km/h) |
| 30 mph (48.28 km/h) | 31.88 mph (51.31 km/h) |
| 35 mph (56.33 km/h) | 37.2 mph (59.86 km/h) |
| 40 mph (64.37 km/h) | 42.51 mph (68.42 km/h) |
| 45 mph (72.42 km/h) | 47.82 mph (76.97 km/h) |
| 50 mph (80.47 km/h) | 53.14 mph (85.52 km/h) |
| 55 mph (88.51 km/h) | 58.45 mph (94.07 km/h) |
| 60 mph (96.56 km/h) | 63.77 mph (102.62 km/h) |
| 65 mph (104.61 km/h) | 69.08 mph (111.17 km/h) |
| 70 mph (112.65 km/h) | 74.39 mph (119.73 km/h) |
| 75 mph (120.7 km/h) | 79.71 mph (128.28 km/h) |
| 80 mph (128.75 km/h) | 85.02 mph (136.83 km/h) |
| 85 mph (136.79 km/h) | 90.34 mph (145.38 km/h) |
| 90 mph (144.84 km/h) | 95.65 mph (153.93 km/h) |
| 95 mph (152.89 km/h) | 100.96 mph (162.49 km/h) |
| 100 mph (160.93 km/h) | 106.28 mph (171.04 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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