Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/60-15 | 185/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.8 (579) | 23.01 (584.5) | 0.22 (5.5) 0.9% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 71.61 (1818.98) | 72.29 (1836.26) | 0.68 (17.28) 0.9% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.01 (101.75) | 0.11 (2.75) 2.8% |
| Revolutions per mile (km) | 884.75 (549.76) | 876.42 (544.58) | -8.33 (-5.17) -0.9% |
185/55-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.19 mph (32.49 km/h) |
| 25 mph (40.23 km/h) | 25.24 mph (40.62 km/h) |
| 30 mph (48.28 km/h) | 30.28 mph (48.74 km/h) |
| 35 mph (56.33 km/h) | 35.33 mph (56.86 km/h) |
| 40 mph (64.37 km/h) | 40.38 mph (64.99 km/h) |
| 45 mph (72.42 km/h) | 45.43 mph (73.11 km/h) |
| 50 mph (80.47 km/h) | 50.47 mph (81.23 km/h) |
| 55 mph (88.51 km/h) | 55.52 mph (89.35 km/h) |
| 60 mph (96.56 km/h) | 60.57 mph (97.48 km/h) |
| 65 mph (104.61 km/h) | 65.62 mph (105.6 km/h) |
| 70 mph (112.65 km/h) | 70.66 mph (113.72 km/h) |
| 75 mph (120.7 km/h) | 75.71 mph (121.85 km/h) |
| 80 mph (128.75 km/h) | 80.76 mph (129.97 km/h) |
| 85 mph (136.79 km/h) | 85.81 mph (138.09 km/h) |
| 90 mph (144.84 km/h) | 90.85 mph (146.22 km/h) |
| 95 mph (152.89 km/h) | 95.9 mph (154.34 km/h) |
| 100 mph (160.93 km/h) | 100.95 mph (162.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2230 | 2591 | 2790 | 2914 | 3047 | 3141 | 3246 | 3369 | 3540 | 3711 | 3901 | 4053 | 4328 | 4631 | 4869 | 5021 | 5106 | 5419 | 5856 | 6805 |
Better Fuel Economy Factory Ratios Increased Power
