Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-13 | 185/55-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.15 (511.7) | 21.01 (533.7) | 0.87 (22) 4.3% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 63.29 (1607.55) | 66.01 (1676.67) | 2.72 (69.12) 4.3% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 4.01 (101.75) | 0.43 (11) 12.1% |
| Revolutions per mile (km) | 1001.11 (622.06) | 959.85 (596.42) | -41.27 (-25.64) -4.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.86 mph (33.57 km/h) |
| 25 mph (40.23 km/h) | 26.07 mph (41.96 km/h) |
| 30 mph (48.28 km/h) | 31.29 mph (50.36 km/h) |
| 35 mph (56.33 km/h) | 36.5 mph (58.75 km/h) |
| 40 mph (64.37 km/h) | 41.72 mph (67.14 km/h) |
| 45 mph (72.42 km/h) | 46.93 mph (75.53 km/h) |
| 50 mph (80.47 km/h) | 52.15 mph (83.93 km/h) |
| 55 mph (88.51 km/h) | 57.36 mph (92.32 km/h) |
| 60 mph (96.56 km/h) | 62.58 mph (100.71 km/h) |
| 65 mph (104.61 km/h) | 67.79 mph (109.11 km/h) |
| 70 mph (112.65 km/h) | 73.01 mph (117.5 km/h) |
| 75 mph (120.7 km/h) | 78.22 mph (125.89 km/h) |
| 80 mph (128.75 km/h) | 83.44 mph (134.28 km/h) |
| 85 mph (136.79 km/h) | 88.65 mph (142.68 km/h) |
| 90 mph (144.84 km/h) | 93.87 mph (151.07 km/h) |
| 95 mph (152.89 km/h) | 99.08 mph (159.46 km/h) |
| 100 mph (160.93 km/h) | 104.3 mph (167.85 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
