Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/55-17 | 185/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.58 (624.3) | 24.28 (616.8) | -0.3 (-7.5) -1.2% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 77.22 (1961.3) | 76.29 (1937.73) | -0.93 (-23.56) -1.2% |
| Sidewall Height inches (mm) | 3.79 (96.25) | 3.64 (92.5) | -0.15 (-3.75) -3.9% |
| Revolutions per mile (km) | 820.55 (509.87) | 830.53 (516.07) | 9.98 (6.2) 1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.76 mph (31.8 km/h) |
| 25 mph (40.23 km/h) | 24.7 mph (39.75 km/h) |
| 30 mph (48.28 km/h) | 29.64 mph (47.7 km/h) |
| 35 mph (56.33 km/h) | 34.58 mph (55.65 km/h) |
| 40 mph (64.37 km/h) | 39.52 mph (63.6 km/h) |
| 45 mph (72.42 km/h) | 44.46 mph (71.55 km/h) |
| 50 mph (80.47 km/h) | 49.4 mph (79.5 km/h) |
| 55 mph (88.51 km/h) | 54.34 mph (87.45 km/h) |
| 60 mph (96.56 km/h) | 59.28 mph (95.4 km/h) |
| 65 mph (104.61 km/h) | 64.22 mph (103.35 km/h) |
| 70 mph (112.65 km/h) | 69.16 mph (111.3 km/h) |
| 75 mph (120.7 km/h) | 74.1 mph (119.25 km/h) |
| 80 mph (128.75 km/h) | 79.04 mph (127.2 km/h) |
| 85 mph (136.79 km/h) | 83.98 mph (135.15 km/h) |
| 90 mph (144.84 km/h) | 88.92 mph (143.1 km/h) |
| 95 mph (152.89 km/h) | 93.86 mph (151.05 km/h) |
| 100 mph (160.93 km/h) | 98.8 mph (159 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2114 | 2455 | 2644 | 2761 | 2887 | 2977 | 3076 | 3193 | 3355 | 3517 | 3696 | 3840 | 4101 | 4389 | 4614 | 4758 | 4839 | 5135 | 5549 | 6449 |
Better Fuel Economy Factory Ratios Increased Power
