Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/55-13 | 175/50-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.01 (533.7) | 19.89 (505.2) | -1.12 (-28.5) -5.3% |
| Width inches (mm) | 7.28 (185) | 6.89 (175) | -0.39 (-10) -5.4% |
| Circum. inches (mm) | 66.01 (1676.67) | 62.49 (1587.13) | -3.53 (-89.54) -5.3% |
| Sidewall Height inches (mm) | 4.01 (101.75) | 3.44 (87.5) | -0.56 (-14.25) -14% |
| Revolutions per mile (km) | 959.85 (596.42) | 1013.99 (630.07) | 54.15 (33.65) 5.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.93 mph (30.47 km/h) |
| 25 mph (40.23 km/h) | 23.66 mph (38.09 km/h) |
| 30 mph (48.28 km/h) | 28.4 mph (45.7 km/h) |
| 35 mph (56.33 km/h) | 33.13 mph (53.32 km/h) |
| 40 mph (64.37 km/h) | 37.86 mph (60.94 km/h) |
| 45 mph (72.42 km/h) | 42.6 mph (68.55 km/h) |
| 50 mph (80.47 km/h) | 47.33 mph (76.17 km/h) |
| 55 mph (88.51 km/h) | 52.06 mph (83.79 km/h) |
| 60 mph (96.56 km/h) | 56.8 mph (91.4 km/h) |
| 65 mph (104.61 km/h) | 61.53 mph (99.02 km/h) |
| 70 mph (112.65 km/h) | 66.26 mph (106.64 km/h) |
| 75 mph (120.7 km/h) | 70.99 mph (114.26 km/h) |
| 80 mph (128.75 km/h) | 75.73 mph (121.87 km/h) |
| 85 mph (136.79 km/h) | 80.46 mph (129.49 km/h) |
| 90 mph (144.84 km/h) | 85.19 mph (137.11 km/h) |
| 95 mph (152.89 km/h) | 89.93 mph (144.72 km/h) |
| 100 mph (160.93 km/h) | 94.66 mph (152.34 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
