Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/50-12 | 225/55-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.46 (519.8) | 21.74 (552.3) | 1.28 (32.5) 6.3% |
| Width inches (mm) | 8.46 (215) | 8.86 (225) | 0.39 (10) 4.7% |
| Circum. inches (mm) | 64.29 (1633) | 68.31 (1735.1) | 4.02 (102.1) 6.3% |
| Sidewall Height inches (mm) | 4.23 (107.5) | 4.87 (123.75) | 0.64 (16.25) 15.1% |
| Revolutions per mile (km) | 985.51 (612.37) | 927.52 (576.33) | -57.99 (-36.03) -5.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.25 mph (34.2 km/h) |
| 25 mph (40.23 km/h) | 26.56 mph (42.75 km/h) |
| 30 mph (48.28 km/h) | 31.88 mph (51.3 km/h) |
| 35 mph (56.33 km/h) | 37.19 mph (59.85 km/h) |
| 40 mph (64.37 km/h) | 42.5 mph (68.4 km/h) |
| 45 mph (72.42 km/h) | 47.81 mph (76.95 km/h) |
| 50 mph (80.47 km/h) | 53.13 mph (85.5 km/h) |
| 55 mph (88.51 km/h) | 58.44 mph (94.05 km/h) |
| 60 mph (96.56 km/h) | 63.75 mph (102.6 km/h) |
| 65 mph (104.61 km/h) | 69.06 mph (111.15 km/h) |
| 70 mph (112.65 km/h) | 74.38 mph (119.7 km/h) |
| 75 mph (120.7 km/h) | 79.69 mph (128.25 km/h) |
| 80 mph (128.75 km/h) | 85 mph (136.8 km/h) |
| 85 mph (136.79 km/h) | 90.31 mph (145.35 km/h) |
| 90 mph (144.84 km/h) | 95.63 mph (153.9 km/h) |
| 95 mph (152.89 km/h) | 100.94 mph (162.45 km/h) |
| 100 mph (160.93 km/h) | 106.25 mph (171 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
