Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/60-20 | 285/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.57 (802) | 33.46 (850) | 1.89 (48) 6% |
| Width inches (mm) | 9.65 (245) | 11.22 (285) | 1.57 (40) 16.3% |
| Circum. inches (mm) | 99.2 (2519.56) | 105.13 (2670.35) | 5.94 (150.8) 6% |
| Sidewall Height inches (mm) | 5.79 (147) | 6.73 (171) | 0.94 (24) 16.3% |
| Revolutions per mile (km) | 638.74 (396.89) | 602.67 (374.48) | -36.07 (-22.41) -5.6% |
285/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.2 mph (34.11 km/h) |
| 25 mph (40.23 km/h) | 26.5 mph (42.64 km/h) |
| 30 mph (48.28 km/h) | 31.8 mph (51.17 km/h) |
| 35 mph (56.33 km/h) | 37.09 mph (59.7 km/h) |
| 40 mph (64.37 km/h) | 42.39 mph (68.23 km/h) |
| 45 mph (72.42 km/h) | 47.69 mph (76.76 km/h) |
| 50 mph (80.47 km/h) | 52.99 mph (85.28 km/h) |
| 55 mph (88.51 km/h) | 58.29 mph (93.81 km/h) |
| 60 mph (96.56 km/h) | 63.59 mph (102.34 km/h) |
| 65 mph (104.61 km/h) | 68.89 mph (110.87 km/h) |
| 70 mph (112.65 km/h) | 74.19 mph (119.4 km/h) |
| 75 mph (120.7 km/h) | 79.49 mph (127.93 km/h) |
| 80 mph (128.75 km/h) | 84.79 mph (136.45 km/h) |
| 85 mph (136.79 km/h) | 90.09 mph (144.98 km/h) |
| 90 mph (144.84 km/h) | 95.39 mph (153.51 km/h) |
| 95 mph (152.89 km/h) | 100.69 mph (162.04 km/h) |
| 100 mph (160.93 km/h) | 105.99 mph (170.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1534 | 1782 | 1919 | 2004 | 2095 | 2160 | 2232 | 2317 | 2434 | 2552 | 2682 | 2787 | 2976 | 3185 | 3348 | 3452 | 3511 | 3727 | 4027 | 4679 |
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