Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/50-16 | 185/40-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.28 (591.4) | 21.83 (554.4) | -1.46 (-37) -6.3% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 73.15 (1857.94) | 68.57 (1741.7) | -4.58 (-116.24) -6.3% |
| Sidewall Height inches (mm) | 3.64 (92.5) | 2.91 (74) | -0.73 (-18.5) -20% |
| Revolutions per mile (km) | 866.2 (538.23) | 924.01 (574.15) | 57.81 (35.92) 6.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.75 mph (30.17 km/h) |
| 25 mph (40.23 km/h) | 23.44 mph (37.72 km/h) |
| 30 mph (48.28 km/h) | 28.12 mph (45.26 km/h) |
| 35 mph (56.33 km/h) | 32.81 mph (52.8 km/h) |
| 40 mph (64.37 km/h) | 37.5 mph (60.35 km/h) |
| 45 mph (72.42 km/h) | 42.18 mph (67.89 km/h) |
| 50 mph (80.47 km/h) | 46.87 mph (75.43 km/h) |
| 55 mph (88.51 km/h) | 51.56 mph (82.98 km/h) |
| 60 mph (96.56 km/h) | 56.25 mph (90.52 km/h) |
| 65 mph (104.61 km/h) | 60.93 mph (98.06 km/h) |
| 70 mph (112.65 km/h) | 65.62 mph (105.61 km/h) |
| 75 mph (120.7 km/h) | 70.31 mph (113.15 km/h) |
| 80 mph (128.75 km/h) | 74.99 mph (120.69 km/h) |
| 85 mph (136.79 km/h) | 79.68 mph (128.24 km/h) |
| 90 mph (144.84 km/h) | 84.37 mph (135.78 km/h) |
| 95 mph (152.89 km/h) | 89.06 mph (143.32 km/h) |
| 100 mph (160.93 km/h) | 93.74 mph (150.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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
