Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 220/55-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 21.53 (546.8) | 2.38 (60.5) 12.4% |
| Width inches (mm) | 6.5 (165) | 8.66 (220) | 2.17 (55) 33.3% |
| Circum. inches (mm) | 60.15 (1527.76) | 67.63 (1717.82) | 7.48 (190.07) 12.4% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 4.76 (121) | 1.19 (30.25) 33.3% |
| Revolutions per mile (km) | 1053.4 (654.55) | 936.85 (582.13) | -116.55 (-72.42) -11.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.49 mph (36.19 km/h) |
| 25 mph (40.23 km/h) | 28.11 mph (45.24 km/h) |
| 30 mph (48.28 km/h) | 33.73 mph (54.29 km/h) |
| 35 mph (56.33 km/h) | 39.35 mph (63.33 km/h) |
| 40 mph (64.37 km/h) | 44.98 mph (72.38 km/h) |
| 45 mph (72.42 km/h) | 50.6 mph (81.43 km/h) |
| 50 mph (80.47 km/h) | 56.22 mph (90.48 km/h) |
| 55 mph (88.51 km/h) | 61.84 mph (99.53 km/h) |
| 60 mph (96.56 km/h) | 67.46 mph (108.57 km/h) |
| 65 mph (104.61 km/h) | 73.09 mph (117.62 km/h) |
| 70 mph (112.65 km/h) | 78.71 mph (126.67 km/h) |
| 75 mph (120.7 km/h) | 84.33 mph (135.72 km/h) |
| 80 mph (128.75 km/h) | 89.95 mph (144.77 km/h) |
| 85 mph (136.79 km/h) | 95.57 mph (153.81 km/h) |
| 90 mph (144.84 km/h) | 101.2 mph (162.86 km/h) |
| 95 mph (152.89 km/h) | 106.82 mph (171.91 km/h) |
| 100 mph (160.93 km/h) | 112.44 mph (180.96 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
