Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/65-14 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.96 (583.1) | 23.74 (603) | 0.78 (19.9) 3.4% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 72.12 (1831.86) | 74.58 (1894.38) | 2.46 (62.52) 3.4% |
| Sidewall Height inches (mm) | 4.48 (113.75) | 4.37 (111) | -0.11 (-2.75) -2.4% |
| Revolutions per mile (km) | 878.53 (545.89) | 849.54 (527.88) | -28.99 (-18.02) -3.3% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.68 mph (33.29 km/h) |
| 25 mph (40.23 km/h) | 25.85 mph (41.61 km/h) |
| 30 mph (48.28 km/h) | 31.02 mph (49.93 km/h) |
| 35 mph (56.33 km/h) | 36.19 mph (58.25 km/h) |
| 40 mph (64.37 km/h) | 41.37 mph (66.57 km/h) |
| 45 mph (72.42 km/h) | 46.54 mph (74.89 km/h) |
| 50 mph (80.47 km/h) | 51.71 mph (83.21 km/h) |
| 55 mph (88.51 km/h) | 56.88 mph (91.53 km/h) |
| 60 mph (96.56 km/h) | 62.05 mph (99.86 km/h) |
| 65 mph (104.61 km/h) | 67.22 mph (108.18 km/h) |
| 70 mph (112.65 km/h) | 72.39 mph (116.5 km/h) |
| 75 mph (120.7 km/h) | 77.56 mph (124.82 km/h) |
| 80 mph (128.75 km/h) | 82.73 mph (133.14 km/h) |
| 85 mph (136.79 km/h) | 87.9 mph (141.46 km/h) |
| 90 mph (144.84 km/h) | 93.07 mph (149.78 km/h) |
| 95 mph (152.89 km/h) | 98.24 mph (158.11 km/h) |
| 100 mph (160.93 km/h) | 103.41 mph (166.43 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
