Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/65-18 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.54 (775.7) | 32.99 (838) | 2.45 (62.3) 8% |
| Width inches (mm) | 9.65 (245) | 10.83 (275) | 1.18 (30) 12.2% |
| Circum. inches (mm) | 95.94 (2436.93) | 103.65 (2632.65) | 7.71 (195.72) 8% |
| Sidewall Height inches (mm) | 6.27 (159.25) | 6.5 (165) | 0.23 (5.75) 3.6% |
| Revolutions per mile (km) | 660.4 (410.35) | 611.3 (379.84) | -49.1 (-30.51) -7.4% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.61 mph (34.77 km/h) |
| 25 mph (40.23 km/h) | 27.01 mph (43.47 km/h) |
| 30 mph (48.28 km/h) | 32.41 mph (52.16 km/h) |
| 35 mph (56.33 km/h) | 37.81 mph (60.85 km/h) |
| 40 mph (64.37 km/h) | 43.21 mph (69.54 km/h) |
| 45 mph (72.42 km/h) | 48.61 mph (78.24 km/h) |
| 50 mph (80.47 km/h) | 54.02 mph (86.93 km/h) |
| 55 mph (88.51 km/h) | 59.42 mph (95.62 km/h) |
| 60 mph (96.56 km/h) | 64.82 mph (104.32 km/h) |
| 65 mph (104.61 km/h) | 70.22 mph (113.01 km/h) |
| 70 mph (112.65 km/h) | 75.62 mph (121.7 km/h) |
| 75 mph (120.7 km/h) | 81.02 mph (130.4 km/h) |
| 80 mph (128.75 km/h) | 86.43 mph (139.09 km/h) |
| 85 mph (136.79 km/h) | 91.83 mph (147.78 km/h) |
| 90 mph (144.84 km/h) | 97.23 mph (156.47 km/h) |
| 95 mph (152.89 km/h) | 102.63 mph (165.17 km/h) |
| 100 mph (160.93 km/h) | 108.03 mph (173.86 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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