Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 225/55-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 21.74 (552.3) | 2.6 (66) 13.6% |
| Width inches (mm) | 6.5 (165) | 8.86 (225) | 2.36 (60) 36.4% |
| Circum. inches (mm) | 60.15 (1527.76) | 68.31 (1735.1) | 8.16 (207.35) 13.6% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 4.87 (123.75) | 1.3 (33) 36.4% |
| Revolutions per mile (km) | 1053.4 (654.55) | 927.52 (576.33) | -125.88 (-78.22) -12% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.71 mph (36.56 km/h) |
| 25 mph (40.23 km/h) | 28.39 mph (45.69 km/h) |
| 30 mph (48.28 km/h) | 34.07 mph (54.83 km/h) |
| 35 mph (56.33 km/h) | 39.75 mph (63.97 km/h) |
| 40 mph (64.37 km/h) | 45.43 mph (73.11 km/h) |
| 45 mph (72.42 km/h) | 51.11 mph (82.25 km/h) |
| 50 mph (80.47 km/h) | 56.79 mph (91.39 km/h) |
| 55 mph (88.51 km/h) | 62.46 mph (100.53 km/h) |
| 60 mph (96.56 km/h) | 68.14 mph (109.67 km/h) |
| 65 mph (104.61 km/h) | 73.82 mph (118.8 km/h) |
| 70 mph (112.65 km/h) | 79.5 mph (127.94 km/h) |
| 75 mph (120.7 km/h) | 85.18 mph (137.08 km/h) |
| 80 mph (128.75 km/h) | 90.86 mph (146.22 km/h) |
| 85 mph (136.79 km/h) | 96.54 mph (155.36 km/h) |
| 90 mph (144.84 km/h) | 102.21 mph (164.5 km/h) |
| 95 mph (152.89 km/h) | 107.89 mph (173.64 km/h) |
| 100 mph (160.93 km/h) | 113.57 mph (182.78 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
