Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/85-16 | 290/85-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.74 (882.4) | 36.41 (924.8) | 1.67 (42.4) 4.8% |
| Width inches (mm) | 11.02 (280) | 11.42 (290) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 109.14 (2772.14) | 114.38 (2905.34) | 5.24 (133.2) 4.8% |
| Sidewall Height inches (mm) | 9.37 (238) | 9.7 (246.5) | 0.33 (8.5) 3.6% |
| Revolutions per mile (km) | 580.54 (360.73) | 553.93 (344.19) | -26.62 (-16.54) -4.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.96 mph (33.73 km/h) |
| 25 mph (40.23 km/h) | 26.2 mph (42.17 km/h) |
| 30 mph (48.28 km/h) | 31.44 mph (50.6 km/h) |
| 35 mph (56.33 km/h) | 36.68 mph (59.03 km/h) |
| 40 mph (64.37 km/h) | 41.92 mph (67.47 km/h) |
| 45 mph (72.42 km/h) | 47.16 mph (75.9 km/h) |
| 50 mph (80.47 km/h) | 52.4 mph (84.33 km/h) |
| 55 mph (88.51 km/h) | 57.64 mph (92.77 km/h) |
| 60 mph (96.56 km/h) | 62.88 mph (101.2 km/h) |
| 65 mph (104.61 km/h) | 68.12 mph (109.63 km/h) |
| 70 mph (112.65 km/h) | 73.36 mph (118.07 km/h) |
| 75 mph (120.7 km/h) | 78.6 mph (126.5 km/h) |
| 80 mph (128.75 km/h) | 83.84 mph (134.93 km/h) |
| 85 mph (136.79 km/h) | 89.08 mph (143.37 km/h) |
| 90 mph (144.84 km/h) | 94.32 mph (151.8 km/h) |
| 95 mph (152.89 km/h) | 99.56 mph (160.23 km/h) |
| 100 mph (160.93 km/h) | 104.81 mph (168.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1410 | 1638 | 1764 | 1842 | 1926 | 1985 | 2051 | 2129 | 2237 | 2345 | 2465 | 2561 | 2735 | 2927 | 3077 | 3173 | 3227 | 3425 | 3701 | 4301 |
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