Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/45-15 | 175/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.5) | 21.89 (556) | 0.69 (17.5) 3.2% |
| Width inches (mm) | 6.89 (175) | 6.89 (175) | 0 (0) 0% |
| Circum. inches (mm) | 66.6 (1691.75) | 68.77 (1746.73) | 2.16 (54.98) 3.2% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 3.44 (87.5) | 0.34 (8.75) 11.1% |
| Revolutions per mile (km) | 951.29 (591.1) | 921.35 (572.5) | -29.94 (-18.6) -3.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.65 mph (33.23 km/h) |
| 25 mph (40.23 km/h) | 25.81 mph (41.54 km/h) |
| 30 mph (48.28 km/h) | 30.97 mph (49.85 km/h) |
| 35 mph (56.33 km/h) | 36.14 mph (58.16 km/h) |
| 40 mph (64.37 km/h) | 41.3 mph (66.47 km/h) |
| 45 mph (72.42 km/h) | 46.46 mph (74.77 km/h) |
| 50 mph (80.47 km/h) | 51.62 mph (83.08 km/h) |
| 55 mph (88.51 km/h) | 56.79 mph (91.39 km/h) |
| 60 mph (96.56 km/h) | 61.95 mph (99.7 km/h) |
| 65 mph (104.61 km/h) | 67.11 mph (108.01 km/h) |
| 70 mph (112.65 km/h) | 72.27 mph (116.32 km/h) |
| 75 mph (120.7 km/h) | 77.44 mph (124.62 km/h) |
| 80 mph (128.75 km/h) | 82.6 mph (132.93 km/h) |
| 85 mph (136.79 km/h) | 87.76 mph (141.24 km/h) |
| 90 mph (144.84 km/h) | 92.92 mph (149.55 km/h) |
| 95 mph (152.89 km/h) | 98.09 mph (157.86 km/h) |
| 100 mph (160.93 km/h) | 103.25 mph (166.16 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
