Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/40-18 | 285/45-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.24 (717.2) | 32.1 (815.3) | 3.86 (98.1) 13.7% |
| Width inches (mm) | 12.8 (325) | 11.22 (285) | -1.57 (-40) -12.3% |
| Circum. inches (mm) | 88.71 (2253.15) | 100.84 (2561.34) | 12.13 (308.19) 13.7% |
| Sidewall Height inches (mm) | 5.12 (130) | 5.05 (128.25) | -0.07 (-1.75) -1.3% |
| Revolutions per mile (km) | 714.26 (443.82) | 628.32 (390.42) | -85.94 (-53.4) -12% |
285/45-22 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.74 mph (36.59 km/h) |
| 25 mph (40.23 km/h) | 28.42 mph (45.74 km/h) |
| 30 mph (48.28 km/h) | 34.1 mph (54.88 km/h) |
| 35 mph (56.33 km/h) | 39.79 mph (64.03 km/h) |
| 40 mph (64.37 km/h) | 45.47 mph (73.18 km/h) |
| 45 mph (72.42 km/h) | 51.16 mph (82.33 km/h) |
| 50 mph (80.47 km/h) | 56.84 mph (91.47 km/h) |
| 55 mph (88.51 km/h) | 62.52 mph (100.62 km/h) |
| 60 mph (96.56 km/h) | 68.21 mph (109.77 km/h) |
| 65 mph (104.61 km/h) | 73.89 mph (118.92 km/h) |
| 70 mph (112.65 km/h) | 79.57 mph (128.06 km/h) |
| 75 mph (120.7 km/h) | 85.26 mph (137.21 km/h) |
| 80 mph (128.75 km/h) | 90.94 mph (146.36 km/h) |
| 85 mph (136.79 km/h) | 96.63 mph (155.51 km/h) |
| 90 mph (144.84 km/h) | 102.31 mph (164.65 km/h) |
| 95 mph (152.89 km/h) | 107.99 mph (173.8 km/h) |
| 100 mph (160.93 km/h) | 113.68 mph (182.95 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1599 | 1858 | 2000 | 2089 | 2184 | 2252 | 2327 | 2415 | 2538 | 2660 | 2796 | 2905 | 3103 | 3320 | 3490 | 3599 | 3661 | 3885 | 4198 | 4879 |
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