Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/60-19 | 175/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.27 (692.6) | 27.58 (700.5) | 0.31 (7.9) 1.1% |
| Width inches (mm) | 6.89 (175) | 6.89 (175) | 0 (0) 0% |
| Circum. inches (mm) | 85.66 (2175.87) | 86.64 (2200.69) | 0.98 (24.82) 1.1% |
| Sidewall Height inches (mm) | 4.13 (105) | 3.79 (96.25) | -0.34 (-8.75) -8.3% |
| Revolutions per mile (km) | 739.63 (459.59) | 731.29 (454.4) | -8.34 (-5.18) -1.1% |
175/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.23 mph (32.55 km/h) |
| 25 mph (40.23 km/h) | 25.29 mph (40.69 km/h) |
| 30 mph (48.28 km/h) | 30.34 mph (48.83 km/h) |
| 35 mph (56.33 km/h) | 35.4 mph (56.97 km/h) |
| 40 mph (64.37 km/h) | 40.46 mph (65.11 km/h) |
| 45 mph (72.42 km/h) | 45.51 mph (73.25 km/h) |
| 50 mph (80.47 km/h) | 50.57 mph (81.39 km/h) |
| 55 mph (88.51 km/h) | 55.63 mph (89.52 km/h) |
| 60 mph (96.56 km/h) | 60.68 mph (97.66 km/h) |
| 65 mph (104.61 km/h) | 65.74 mph (105.8 km/h) |
| 70 mph (112.65 km/h) | 70.8 mph (113.94 km/h) |
| 75 mph (120.7 km/h) | 75.86 mph (122.08 km/h) |
| 80 mph (128.75 km/h) | 80.91 mph (130.22 km/h) |
| 85 mph (136.79 km/h) | 85.97 mph (138.35 km/h) |
| 90 mph (144.84 km/h) | 91.03 mph (146.49 km/h) |
| 95 mph (152.89 km/h) | 96.08 mph (154.63 km/h) |
| 100 mph (160.93 km/h) | 101.14 mph (162.77 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1861 | 2162 | 2328 | 2431 | 2542 | 2621 | 2708 | 2811 | 2954 | 3096 | 3255 | 3381 | 3611 | 3865 | 4063 | 4189 | 4260 | 4522 | 4886 | 5678 |
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