Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/80-17 | 285/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.8 (807.8) | 34.95 (887.8) | 3.15 (80) 9.9% |
| Width inches (mm) | 9.25 (235) | 11.22 (285) | 1.97 (50) 21.3% |
| Circum. inches (mm) | 99.91 (2537.78) | 109.81 (2789.11) | 9.89 (251.33) 9.9% |
| Sidewall Height inches (mm) | 7.4 (188) | 8.98 (228) | 1.57 (40) 21.3% |
| Revolutions per mile (km) | 634.15 (394.04) | 577.01 (358.54) | -57.14 (-35.51) -9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.98 mph (35.37 km/h) |
| 25 mph (40.23 km/h) | 27.48 mph (44.22 km/h) |
| 30 mph (48.28 km/h) | 32.97 mph (53.06 km/h) |
| 35 mph (56.33 km/h) | 38.47 mph (61.91 km/h) |
| 40 mph (64.37 km/h) | 43.96 mph (70.75 km/h) |
| 45 mph (72.42 km/h) | 49.46 mph (79.59 km/h) |
| 50 mph (80.47 km/h) | 54.95 mph (88.44 km/h) |
| 55 mph (88.51 km/h) | 60.45 mph (97.28 km/h) |
| 60 mph (96.56 km/h) | 65.94 mph (106.12 km/h) |
| 65 mph (104.61 km/h) | 71.44 mph (114.97 km/h) |
| 70 mph (112.65 km/h) | 76.93 mph (123.81 km/h) |
| 75 mph (120.7 km/h) | 82.43 mph (132.65 km/h) |
| 80 mph (128.75 km/h) | 87.92 mph (141.5 km/h) |
| 85 mph (136.79 km/h) | 93.42 mph (150.34 km/h) |
| 90 mph (144.84 km/h) | 98.91 mph (159.19 km/h) |
| 95 mph (152.89 km/h) | 104.41 mph (168.03 km/h) |
| 100 mph (160.93 km/h) | 109.9 mph (176.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1468 | 1706 | 1837 | 1918 | 2006 | 2068 | 2137 | 2218 | 2331 | 2443 | 2568 | 2668 | 2849 | 3049 | 3205 | 3305 | 3362 | 3568 | 3855 | 4480 |
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