Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/45-15 | 175/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.5) | 23.2 (589.3) | 2 (50.8) 9.4% |
| Width inches (mm) | 6.89 (175) | 6.89 (175) | 0 (0) 0% |
| Circum. inches (mm) | 66.6 (1691.75) | 72.89 (1851.34) | 6.28 (159.59) 9.4% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 3.1 (78.75) | 0 (0) 0% |
| Revolutions per mile (km) | 951.29 (591.1) | 869.29 (540.15) | -82.01 (-50.96) -8.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.89 mph (35.22 km/h) |
| 25 mph (40.23 km/h) | 27.36 mph (44.03 km/h) |
| 30 mph (48.28 km/h) | 32.83 mph (52.83 km/h) |
| 35 mph (56.33 km/h) | 38.3 mph (61.64 km/h) |
| 40 mph (64.37 km/h) | 43.77 mph (70.45 km/h) |
| 45 mph (72.42 km/h) | 49.25 mph (79.25 km/h) |
| 50 mph (80.47 km/h) | 54.72 mph (88.06 km/h) |
| 55 mph (88.51 km/h) | 60.19 mph (96.86 km/h) |
| 60 mph (96.56 km/h) | 65.66 mph (105.67 km/h) |
| 65 mph (104.61 km/h) | 71.13 mph (114.48 km/h) |
| 70 mph (112.65 km/h) | 76.6 mph (123.28 km/h) |
| 75 mph (120.7 km/h) | 82.08 mph (132.09 km/h) |
| 80 mph (128.75 km/h) | 87.55 mph (140.89 km/h) |
| 85 mph (136.79 km/h) | 93.02 mph (149.7 km/h) |
| 90 mph (144.84 km/h) | 98.49 mph (158.5 km/h) |
| 95 mph (152.89 km/h) | 103.96 mph (167.31 km/h) |
| 100 mph (160.93 km/h) | 109.43 mph (176.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2212 | 2570 | 2768 | 2890 | 3022 | 3116 | 3219 | 3342 | 3511 | 3681 | 3869 | 4020 | 4293 | 4594 | 4829 | 4980 | 5064 | 5375 | 5808 | 6749 |
Better Fuel Economy Factory Ratios Increased Power
