Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 215/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 25.54 (648.8) | 6.4 (162.5) 33.4% |
| Width inches (mm) | 6.5 (165) | 8.46 (215) | 1.97 (50) 30.3% |
| Circum. inches (mm) | 60.15 (1527.76) | 80.25 (2038.27) | 20.1 (510.51) 33.4% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 6.77 (172) | 3.2 (81.25) 89.5% |
| Revolutions per mile (km) | 1053.4 (654.55) | 789.57 (490.61) | -263.84 (-163.94) -25% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.68 mph (42.94 km/h) |
| 25 mph (40.23 km/h) | 33.35 mph (53.68 km/h) |
| 30 mph (48.28 km/h) | 40.02 mph (64.41 km/h) |
| 35 mph (56.33 km/h) | 46.7 mph (75.15 km/h) |
| 40 mph (64.37 km/h) | 53.37 mph (85.88 km/h) |
| 45 mph (72.42 km/h) | 60.04 mph (96.62 km/h) |
| 50 mph (80.47 km/h) | 66.71 mph (107.36 km/h) |
| 55 mph (88.51 km/h) | 73.38 mph (118.09 km/h) |
| 60 mph (96.56 km/h) | 80.05 mph (128.83 km/h) |
| 65 mph (104.61 km/h) | 86.72 mph (139.56 km/h) |
| 70 mph (112.65 km/h) | 93.39 mph (150.3 km/h) |
| 75 mph (120.7 km/h) | 100.06 mph (161.03 km/h) |
| 80 mph (128.75 km/h) | 106.73 mph (171.77 km/h) |
| 85 mph (136.79 km/h) | 113.4 mph (182.51 km/h) |
| 90 mph (144.84 km/h) | 120.07 mph (193.24 km/h) |
| 95 mph (152.89 km/h) | 126.74 mph (203.98 km/h) |
| 100 mph (160.93 km/h) | 133.42 mph (214.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2009 | 2334 | 2514 | 2625 | 2745 | 2830 | 2924 | 3035 | 3189 | 3343 | 3514 | 3651 | 3899 | 4172 | 4386 | 4523 | 4600 | 4882 | 5275 | 6130 |
Better Fuel Economy Factory Ratios Increased Power
