Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-15 | 170/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.23 (590) | 21.69 (551) | -1.54 (-39) -6.6% |
| Width inches (mm) | 7.48 (190) | 6.69 (170) | -0.79 (-20) -10.5% |
| Circum. inches (mm) | 72.97 (1853.54) | 68.15 (1731.02) | -4.82 (-122.52) -6.6% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 3.35 (85) | -0.77 (-19.5) -18.7% |
| Revolutions per mile (km) | 868.25 (539.51) | 929.71 (577.69) | 61.46 (38.19) 7.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.68 mph (30.06 km/h) |
| 25 mph (40.23 km/h) | 23.35 mph (37.57 km/h) |
| 30 mph (48.28 km/h) | 28.02 mph (45.09 km/h) |
| 35 mph (56.33 km/h) | 32.69 mph (52.6 km/h) |
| 40 mph (64.37 km/h) | 37.36 mph (60.12 km/h) |
| 45 mph (72.42 km/h) | 42.03 mph (67.63 km/h) |
| 50 mph (80.47 km/h) | 46.69 mph (75.15 km/h) |
| 55 mph (88.51 km/h) | 51.36 mph (82.66 km/h) |
| 60 mph (96.56 km/h) | 56.03 mph (90.18 km/h) |
| 65 mph (104.61 km/h) | 60.7 mph (97.69 km/h) |
| 70 mph (112.65 km/h) | 65.37 mph (105.21 km/h) |
| 75 mph (120.7 km/h) | 70.04 mph (112.72 km/h) |
| 80 mph (128.75 km/h) | 74.71 mph (120.24 km/h) |
| 85 mph (136.79 km/h) | 79.38 mph (127.75 km/h) |
| 90 mph (144.84 km/h) | 84.05 mph (135.27 km/h) |
| 95 mph (152.89 km/h) | 88.72 mph (142.78 km/h) |
| 100 mph (160.93 km/h) | 93.39 mph (150.3 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
