Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/55-15 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.88 (606.5) | 23.74 (603) | -0.14 (-3.5) -0.6% |
| Width inches (mm) | 8.07 (205) | 7.28 (185) | -0.79 (-20) -9.8% |
| Circum. inches (mm) | 75.01 (1905.38) | 74.58 (1894.38) | -0.43 (-11) -0.6% |
| Sidewall Height inches (mm) | 4.44 (112.75) | 4.37 (111) | -0.07 (-1.75) -1.6% |
| Revolutions per mile (km) | 844.63 (524.83) | 849.54 (527.88) | 4.9 (3.05) 0.6% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.88 mph (32 km/h) |
| 25 mph (40.23 km/h) | 24.86 mph (40 km/h) |
| 30 mph (48.28 km/h) | 29.83 mph (48 km/h) |
| 35 mph (56.33 km/h) | 34.8 mph (56 km/h) |
| 40 mph (64.37 km/h) | 39.77 mph (64 km/h) |
| 45 mph (72.42 km/h) | 44.74 mph (72 km/h) |
| 50 mph (80.47 km/h) | 49.71 mph (80 km/h) |
| 55 mph (88.51 km/h) | 54.68 mph (88 km/h) |
| 60 mph (96.56 km/h) | 59.65 mph (96 km/h) |
| 65 mph (104.61 km/h) | 64.62 mph (104 km/h) |
| 70 mph (112.65 km/h) | 69.6 mph (112 km/h) |
| 75 mph (120.7 km/h) | 74.57 mph (120 km/h) |
| 80 mph (128.75 km/h) | 79.54 mph (128 km/h) |
| 85 mph (136.79 km/h) | 84.51 mph (136.01 km/h) |
| 90 mph (144.84 km/h) | 89.48 mph (144.01 km/h) |
| 95 mph (152.89 km/h) | 94.45 mph (152.01 km/h) |
| 100 mph (160.93 km/h) | 99.42 mph (160.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2162 | 2511 | 2705 | 2824 | 2953 | 3045 | 3146 | 3266 | 3431 | 3597 | 3781 | 3928 | 4195 | 4489 | 4719 | 4867 | 4949 | 5253 | 5676 | 6596 |
Better Fuel Economy Factory Ratios Increased Power
