Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/60-13 | 185/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.27 (540.2) | 21.56 (547.5) | 0.29 (7.3) 1.4% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 66.81 (1697.09) | 67.72 (1720.02) | 0.9 (22.93) 1.4% |
| Sidewall Height inches (mm) | 4.13 (105) | 3.28 (83.25) | -0.86 (-21.75) -20.7% |
| Revolutions per mile (km) | 948.3 (589.24) | 935.65 (581.39) | -12.64 (-7.86) -1.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.27 mph (32.62 km/h) |
| 25 mph (40.23 km/h) | 25.34 mph (40.78 km/h) |
| 30 mph (48.28 km/h) | 30.41 mph (48.93 km/h) |
| 35 mph (56.33 km/h) | 35.47 mph (57.09 km/h) |
| 40 mph (64.37 km/h) | 40.54 mph (65.24 km/h) |
| 45 mph (72.42 km/h) | 45.61 mph (73.4 km/h) |
| 50 mph (80.47 km/h) | 50.68 mph (81.55 km/h) |
| 55 mph (88.51 km/h) | 55.74 mph (89.71 km/h) |
| 60 mph (96.56 km/h) | 60.81 mph (97.87 km/h) |
| 65 mph (104.61 km/h) | 65.88 mph (106.02 km/h) |
| 70 mph (112.65 km/h) | 70.95 mph (114.18 km/h) |
| 75 mph (120.7 km/h) | 76.01 mph (122.33 km/h) |
| 80 mph (128.75 km/h) | 81.08 mph (130.49 km/h) |
| 85 mph (136.79 km/h) | 86.15 mph (138.64 km/h) |
| 90 mph (144.84 km/h) | 91.22 mph (146.8 km/h) |
| 95 mph (152.89 km/h) | 96.28 mph (154.95 km/h) |
| 100 mph (160.93 km/h) | 101.35 mph (163.11 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
