Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/60-18 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.99 (787.2) | 32.99 (838) | 2 (50.8) 6.5% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 97.36 (2473.06) | 103.65 (2632.65) | 6.28 (159.59) 6.5% |
| Sidewall Height inches (mm) | 6.5 (165) | 6.5 (165) | 0 (0) 0% |
| Revolutions per mile (km) | 650.75 (404.36) | 611.3 (379.84) | -39.45 (-24.51) -6.1% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.29 mph (34.26 km/h) |
| 25 mph (40.23 km/h) | 26.61 mph (42.83 km/h) |
| 30 mph (48.28 km/h) | 31.94 mph (51.4 km/h) |
| 35 mph (56.33 km/h) | 37.26 mph (59.96 km/h) |
| 40 mph (64.37 km/h) | 42.58 mph (68.53 km/h) |
| 45 mph (72.42 km/h) | 47.9 mph (77.09 km/h) |
| 50 mph (80.47 km/h) | 53.23 mph (85.66 km/h) |
| 55 mph (88.51 km/h) | 58.55 mph (94.23 km/h) |
| 60 mph (96.56 km/h) | 63.87 mph (102.79 km/h) |
| 65 mph (104.61 km/h) | 69.19 mph (111.36 km/h) |
| 70 mph (112.65 km/h) | 74.52 mph (119.92 km/h) |
| 75 mph (120.7 km/h) | 79.84 mph (128.49 km/h) |
| 80 mph (128.75 km/h) | 85.16 mph (137.06 km/h) |
| 85 mph (136.79 km/h) | 90.49 mph (145.62 km/h) |
| 90 mph (144.84 km/h) | 95.81 mph (154.19 km/h) |
| 95 mph (152.89 km/h) | 101.13 mph (162.75 km/h) |
| 100 mph (160.93 km/h) | 106.45 mph (171.32 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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