Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-16 | 185/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.15 (587.9) | 22.83 (579.8) | -0.32 (-8.1) -1.4% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 72.71 (1846.94) | 71.71 (1821.5) | -1 (-25.45) -1.4% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 2.91 (74) | -0.66 (-16.75) -18.5% |
| Revolutions per mile (km) | 871.36 (541.43) | 883.53 (549) | 12.17 (7.56) 1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.72 mph (31.74 km/h) |
| 25 mph (40.23 km/h) | 24.66 mph (39.68 km/h) |
| 30 mph (48.28 km/h) | 29.59 mph (47.62 km/h) |
| 35 mph (56.33 km/h) | 34.52 mph (55.55 km/h) |
| 40 mph (64.37 km/h) | 39.45 mph (63.49 km/h) |
| 45 mph (72.42 km/h) | 44.38 mph (71.42 km/h) |
| 50 mph (80.47 km/h) | 49.31 mph (79.36 km/h) |
| 55 mph (88.51 km/h) | 54.24 mph (87.29 km/h) |
| 60 mph (96.56 km/h) | 59.17 mph (95.23 km/h) |
| 65 mph (104.61 km/h) | 64.1 mph (103.17 km/h) |
| 70 mph (112.65 km/h) | 69.04 mph (111.1 km/h) |
| 75 mph (120.7 km/h) | 73.97 mph (119.04 km/h) |
| 80 mph (128.75 km/h) | 78.9 mph (126.97 km/h) |
| 85 mph (136.79 km/h) | 83.83 mph (134.91 km/h) |
| 90 mph (144.84 km/h) | 88.76 mph (142.85 km/h) |
| 95 mph (152.89 km/h) | 93.69 mph (150.78 km/h) |
| 100 mph (160.93 km/h) | 98.62 mph (158.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2248 | 2612 | 2813 | 2937 | 3071 | 3167 | 3272 | 3397 | 3569 | 3741 | 3932 | 4085 | 4363 | 4669 | 4908 | 5061 | 5147 | 5463 | 5903 | 6860 |
Better Fuel Economy Factory Ratios Increased Power
