Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/50-13 | 185/45-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.89 (505.2) | 19.56 (496.7) | -0.33 (-8.5) -1.7% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 62.49 (1587.13) | 61.43 (1560.43) | -1.05 (-26.7) -1.7% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 3.28 (83.25) | -0.17 (-4.25) -4.9% |
| Revolutions per mile (km) | 1013.99 (630.07) | 1031.35 (640.85) | 17.35 (10.78) 1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.66 mph (31.65 km/h) |
| 25 mph (40.23 km/h) | 24.58 mph (39.56 km/h) |
| 30 mph (48.28 km/h) | 29.5 mph (47.47 km/h) |
| 35 mph (56.33 km/h) | 34.41 mph (55.38 km/h) |
| 40 mph (64.37 km/h) | 39.33 mph (63.29 km/h) |
| 45 mph (72.42 km/h) | 44.24 mph (71.2 km/h) |
| 50 mph (80.47 km/h) | 49.16 mph (79.11 km/h) |
| 55 mph (88.51 km/h) | 54.07 mph (87.02 km/h) |
| 60 mph (96.56 km/h) | 58.99 mph (94.94 km/h) |
| 65 mph (104.61 km/h) | 63.91 mph (102.85 km/h) |
| 70 mph (112.65 km/h) | 68.82 mph (110.76 km/h) |
| 75 mph (120.7 km/h) | 73.74 mph (118.67 km/h) |
| 80 mph (128.75 km/h) | 78.65 mph (126.58 km/h) |
| 85 mph (136.79 km/h) | 83.57 mph (134.49 km/h) |
| 90 mph (144.84 km/h) | 88.49 mph (142.4 km/h) |
| 95 mph (152.89 km/h) | 93.4 mph (150.32 km/h) |
| 100 mph (160.93 km/h) | 98.32 mph (158.23 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
