Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/50-12 | 215/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.46 (519.8) | 25.54 (648.8) | 5.08 (129) 24.8% |
| Width inches (mm) | 8.46 (215) | 8.46 (215) | 0 (0) 0% |
| Circum. inches (mm) | 64.29 (1633) | 80.25 (2038.27) | 15.96 (405.27) 24.8% |
| Sidewall Height inches (mm) | 4.23 (107.5) | 6.77 (172) | 2.54 (64.5) 60% |
| Revolutions per mile (km) | 985.51 (612.37) | 789.57 (490.61) | -195.95 (-121.76) -19.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.96 mph (40.17 km/h) |
| 25 mph (40.23 km/h) | 31.2 mph (50.22 km/h) |
| 30 mph (48.28 km/h) | 37.45 mph (60.26 km/h) |
| 35 mph (56.33 km/h) | 43.69 mph (70.31 km/h) |
| 40 mph (64.37 km/h) | 49.93 mph (80.35 km/h) |
| 45 mph (72.42 km/h) | 56.17 mph (90.39 km/h) |
| 50 mph (80.47 km/h) | 62.41 mph (100.44 km/h) |
| 55 mph (88.51 km/h) | 68.65 mph (110.48 km/h) |
| 60 mph (96.56 km/h) | 74.89 mph (120.52 km/h) |
| 65 mph (104.61 km/h) | 81.13 mph (130.57 km/h) |
| 70 mph (112.65 km/h) | 87.37 mph (140.61 km/h) |
| 75 mph (120.7 km/h) | 93.61 mph (150.66 km/h) |
| 80 mph (128.75 km/h) | 99.85 mph (160.7 km/h) |
| 85 mph (136.79 km/h) | 106.09 mph (170.74 km/h) |
| 90 mph (144.84 km/h) | 112.34 mph (180.79 km/h) |
| 95 mph (152.89 km/h) | 118.58 mph (190.83 km/h) |
| 100 mph (160.93 km/h) | 124.82 mph (200.87 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
