Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-20 | 285/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.09 (688) | 27.85 (707.5) | 0.77 (19.5) 2.8% |
| Width inches (mm) | 8.86 (225) | 11.22 (285) | 2.36 (60) 26.7% |
| Circum. inches (mm) | 85.1 (2161.42) | 87.51 (2222.68) | 2.41 (61.26) 2.8% |
| Sidewall Height inches (mm) | 3.54 (90) | 3.93 (99.75) | 0.38 (9.75) 10.8% |
| Revolutions per mile (km) | 744.58 (462.66) | 724.06 (449.91) | -20.52 (-12.75) -2.8% |
285/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.57 mph (33.1 km/h) |
| 25 mph (40.23 km/h) | 25.71 mph (41.37 km/h) |
| 30 mph (48.28 km/h) | 30.85 mph (49.65 km/h) |
| 35 mph (56.33 km/h) | 35.99 mph (57.92 km/h) |
| 40 mph (64.37 km/h) | 41.13 mph (66.2 km/h) |
| 45 mph (72.42 km/h) | 46.28 mph (74.47 km/h) |
| 50 mph (80.47 km/h) | 51.42 mph (82.75 km/h) |
| 55 mph (88.51 km/h) | 56.56 mph (91.02 km/h) |
| 60 mph (96.56 km/h) | 61.7 mph (99.3 km/h) |
| 65 mph (104.61 km/h) | 66.84 mph (107.57 km/h) |
| 70 mph (112.65 km/h) | 71.98 mph (115.85 km/h) |
| 75 mph (120.7 km/h) | 77.13 mph (124.12 km/h) |
| 80 mph (128.75 km/h) | 82.27 mph (132.4 km/h) |
| 85 mph (136.79 km/h) | 87.41 mph (140.67 km/h) |
| 90 mph (144.84 km/h) | 92.55 mph (148.95 km/h) |
| 95 mph (152.89 km/h) | 97.69 mph (157.22 km/h) |
| 100 mph (160.93 km/h) | 102.83 mph (165.5 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1843 | 2141 | 2305 | 2407 | 2517 | 2595 | 2682 | 2783 | 2925 | 3066 | 3223 | 3348 | 3575 | 3826 | 4022 | 4148 | 4218 | 4477 | 4838 | 5622 |
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