Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/45-15 | 155/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.5) | 21.1 (536) | -0.1 (-2.5) -0.5% |
| Width inches (mm) | 6.89 (175) | 6.1 (155) | -0.79 (-20) -11.4% |
| Circum. inches (mm) | 66.6 (1691.75) | 66.3 (1683.89) | -0.31 (-7.85) -0.5% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 3.05 (77.5) | -0.05 (-1.25) -1.6% |
| Revolutions per mile (km) | 951.29 (591.1) | 955.73 (593.86) | 4.44 (2.76) 0.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.91 mph (32.04 km/h) |
| 25 mph (40.23 km/h) | 24.88 mph (40.05 km/h) |
| 30 mph (48.28 km/h) | 29.86 mph (48.06 km/h) |
| 35 mph (56.33 km/h) | 34.84 mph (56.07 km/h) |
| 40 mph (64.37 km/h) | 39.81 mph (64.08 km/h) |
| 45 mph (72.42 km/h) | 44.79 mph (72.08 km/h) |
| 50 mph (80.47 km/h) | 49.77 mph (80.09 km/h) |
| 55 mph (88.51 km/h) | 54.74 mph (88.1 km/h) |
| 60 mph (96.56 km/h) | 59.72 mph (96.11 km/h) |
| 65 mph (104.61 km/h) | 64.7 mph (104.12 km/h) |
| 70 mph (112.65 km/h) | 69.68 mph (112.13 km/h) |
| 75 mph (120.7 km/h) | 74.65 mph (120.14 km/h) |
| 80 mph (128.75 km/h) | 79.63 mph (128.15 km/h) |
| 85 mph (136.79 km/h) | 84.61 mph (136.16 km/h) |
| 90 mph (144.84 km/h) | 89.58 mph (144.17 km/h) |
| 95 mph (152.89 km/h) | 94.56 mph (152.18 km/h) |
| 100 mph (160.93 km/h) | 99.54 mph (160.19 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
