Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/90-18 | 285/90-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.4 (772.2) | 42.7 (1084.5) | 12.3 (312.3) 40.4% |
| Width inches (mm) | 6.89 (175) | 11.22 (285) | 4.33 (110) 62.9% |
| Circum. inches (mm) | 95.51 (2425.94) | 134.14 (3407.06) | 38.63 (981.12) 40.4% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 10.1 (256.5) | 3.9 (99) 62.9% |
| Revolutions per mile (km) | 663.39 (412.21) | 472.36 (293.51) | -191.03 (-118.7) -28.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.09 mph (45.2 km/h) |
| 25 mph (40.23 km/h) | 35.11 mph (56.51 km/h) |
| 30 mph (48.28 km/h) | 42.13 mph (67.81 km/h) |
| 35 mph (56.33 km/h) | 49.16 mph (79.11 km/h) |
| 40 mph (64.37 km/h) | 56.18 mph (90.41 km/h) |
| 45 mph (72.42 km/h) | 63.2 mph (101.71 km/h) |
| 50 mph (80.47 km/h) | 70.22 mph (113.01 km/h) |
| 55 mph (88.51 km/h) | 77.24 mph (124.31 km/h) |
| 60 mph (96.56 km/h) | 84.27 mph (135.61 km/h) |
| 65 mph (104.61 km/h) | 91.29 mph (146.91 km/h) |
| 70 mph (112.65 km/h) | 98.31 mph (158.21 km/h) |
| 75 mph (120.7 km/h) | 105.33 mph (169.52 km/h) |
| 80 mph (128.75 km/h) | 112.35 mph (180.82 km/h) |
| 85 mph (136.79 km/h) | 119.38 mph (192.12 km/h) |
| 90 mph (144.84 km/h) | 126.4 mph (203.42 km/h) |
| 95 mph (152.89 km/h) | 133.42 mph (214.72 km/h) |
| 100 mph (160.93 km/h) | 140.44 mph (226.02 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1202 | 1396 | 1504 | 1570 | 1642 | 1693 | 1749 | 1816 | 1908 | 2000 | 2102 | 2184 | 2332 | 2496 | 2624 | 2706 | 2752 | 2921 | 3156 | 3668 |
Better Fuel Economy Factory Ratios Increased Power
