Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-13 | 185/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.54 (547.2) | 21.56 (547.5) | 0.01 (0.3) 0.1% |
| Width inches (mm) | 6.1 (155) | 7.28 (185) | 1.18 (30) 19.4% |
| Circum. inches (mm) | 67.68 (1719.08) | 67.72 (1720.02) | 0.04 (0.94) 0.1% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 3.28 (83.25) | -0.99 (-25.25) -23.3% |
| Revolutions per mile (km) | 936.17 (581.71) | 935.65 (581.39) | -0.51 (-0.32) -0.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.01 mph (32.2 km/h) |
| 25 mph (40.23 km/h) | 25.01 mph (40.26 km/h) |
| 30 mph (48.28 km/h) | 30.02 mph (48.31 km/h) |
| 35 mph (56.33 km/h) | 35.02 mph (56.36 km/h) |
| 40 mph (64.37 km/h) | 40.02 mph (64.41 km/h) |
| 45 mph (72.42 km/h) | 45.02 mph (72.46 km/h) |
| 50 mph (80.47 km/h) | 50.03 mph (80.51 km/h) |
| 55 mph (88.51 km/h) | 55.03 mph (88.56 km/h) |
| 60 mph (96.56 km/h) | 60.03 mph (96.61 km/h) |
| 65 mph (104.61 km/h) | 65.04 mph (104.66 km/h) |
| 70 mph (112.65 km/h) | 70.04 mph (112.72 km/h) |
| 75 mph (120.7 km/h) | 75.04 mph (120.77 km/h) |
| 80 mph (128.75 km/h) | 80.04 mph (128.82 km/h) |
| 85 mph (136.79 km/h) | 85.05 mph (136.87 km/h) |
| 90 mph (144.84 km/h) | 90.05 mph (144.92 km/h) |
| 95 mph (152.89 km/h) | 95.05 mph (152.97 km/h) |
| 100 mph (160.93 km/h) | 100.05 mph (161.02 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
