Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-17 | 285/85-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.99 (634.8) | 36.07 (916.3) | 11.08 (281.5) 44.3% |
| Width inches (mm) | 5.71 (145) | 11.22 (285) | 5.51 (140) 96.6% |
| Circum. inches (mm) | 78.52 (1994.28) | 113.33 (2878.64) | 34.82 (884.36) 44.3% |
| Sidewall Height inches (mm) | 4 (101.5) | 9.54 (242.25) | 5.54 (140.75) 138.7% |
| Revolutions per mile (km) | 806.98 (501.43) | 559.06 (347.39) | -247.92 (-154.05) -30.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.87 mph (46.46 km/h) |
| 25 mph (40.23 km/h) | 36.09 mph (58.08 km/h) |
| 30 mph (48.28 km/h) | 43.3 mph (69.69 km/h) |
| 35 mph (56.33 km/h) | 50.52 mph (81.31 km/h) |
| 40 mph (64.37 km/h) | 57.74 mph (92.92 km/h) |
| 45 mph (72.42 km/h) | 64.96 mph (104.54 km/h) |
| 50 mph (80.47 km/h) | 72.17 mph (116.15 km/h) |
| 55 mph (88.51 km/h) | 79.39 mph (127.77 km/h) |
| 60 mph (96.56 km/h) | 86.61 mph (139.38 km/h) |
| 65 mph (104.61 km/h) | 93.82 mph (151 km/h) |
| 70 mph (112.65 km/h) | 101.04 mph (162.61 km/h) |
| 75 mph (120.7 km/h) | 108.26 mph (174.23 km/h) |
| 80 mph (128.75 km/h) | 115.48 mph (185.84 km/h) |
| 85 mph (136.79 km/h) | 122.69 mph (197.46 km/h) |
| 90 mph (144.84 km/h) | 129.91 mph (209.07 km/h) |
| 95 mph (152.89 km/h) | 137.13 mph (220.69 km/h) |
| 100 mph (160.93 km/h) | 144.34 mph (232.3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1423 | 1653 | 1780 | 1859 | 1943 | 2004 | 2070 | 2149 | 2258 | 2367 | 2488 | 2585 | 2761 | 2954 | 3106 | 3203 | 3257 | 3457 | 3735 | 4341 |
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