Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/66-15 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.13 (638.4) | 23.74 (603) | -1.39 (-35.4) -5.5% |
| Width inches (mm) | 7.68 (195) | 7.28 (185) | -0.39 (-10) -5.1% |
| Circum. inches (mm) | 78.96 (2005.59) | 74.58 (1894.38) | -4.38 (-111.21) -5.5% |
| Sidewall Height inches (mm) | 5.07 (128.7) | 4.37 (111) | -0.7 (-17.7) -13.8% |
| Revolutions per mile (km) | 802.43 (498.6) | 849.54 (527.88) | 47.11 (29.27) 5.9% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.89 mph (30.4 km/h) |
| 25 mph (40.23 km/h) | 23.61 mph (38 km/h) |
| 30 mph (48.28 km/h) | 28.34 mph (45.6 km/h) |
| 35 mph (56.33 km/h) | 33.06 mph (53.2 km/h) |
| 40 mph (64.37 km/h) | 37.78 mph (60.8 km/h) |
| 45 mph (72.42 km/h) | 42.5 mph (68.4 km/h) |
| 50 mph (80.47 km/h) | 47.23 mph (76.01 km/h) |
| 55 mph (88.51 km/h) | 51.95 mph (83.61 km/h) |
| 60 mph (96.56 km/h) | 56.67 mph (91.21 km/h) |
| 65 mph (104.61 km/h) | 61.4 mph (98.81 km/h) |
| 70 mph (112.65 km/h) | 66.12 mph (106.41 km/h) |
| 75 mph (120.7 km/h) | 70.84 mph (114.01 km/h) |
| 80 mph (128.75 km/h) | 75.56 mph (121.61 km/h) |
| 85 mph (136.79 km/h) | 80.29 mph (129.21 km/h) |
| 90 mph (144.84 km/h) | 85.01 mph (136.81 km/h) |
| 95 mph (152.89 km/h) | 89.73 mph (144.41 km/h) |
| 100 mph (160.93 km/h) | 94.45 mph (152.01 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 |
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