Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/80-15 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.39 (645) | 23.74 (603) | -1.65 (-42) -6.5% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 79.78 (2026.33) | 74.58 (1894.38) | -5.19 (-131.95) -6.5% |
| Sidewall Height inches (mm) | 5.2 (132) | 4.37 (111) | -0.83 (-21) -15.9% |
| Revolutions per mile (km) | 794.22 (493.5) | 849.54 (527.88) | 55.32 (34.37) 7% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.7 mph (30.09 km/h) |
| 25 mph (40.23 km/h) | 23.37 mph (37.61 km/h) |
| 30 mph (48.28 km/h) | 28.05 mph (45.14 km/h) |
| 35 mph (56.33 km/h) | 32.72 mph (52.66 km/h) |
| 40 mph (64.37 km/h) | 37.4 mph (60.18 km/h) |
| 45 mph (72.42 km/h) | 42.07 mph (67.7 km/h) |
| 50 mph (80.47 km/h) | 46.74 mph (75.23 km/h) |
| 55 mph (88.51 km/h) | 51.42 mph (82.75 km/h) |
| 60 mph (96.56 km/h) | 56.09 mph (90.27 km/h) |
| 65 mph (104.61 km/h) | 60.77 mph (97.8 km/h) |
| 70 mph (112.65 km/h) | 65.44 mph (105.32 km/h) |
| 75 mph (120.7 km/h) | 70.12 mph (112.84 km/h) |
| 80 mph (128.75 km/h) | 74.79 mph (120.36 km/h) |
| 85 mph (136.79 km/h) | 79.47 mph (127.89 km/h) |
| 90 mph (144.84 km/h) | 84.14 mph (135.41 km/h) |
| 95 mph (152.89 km/h) | 88.81 mph (142.93 km/h) |
| 100 mph (160.93 km/h) | 93.49 mph (150.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2162 | 2511 | 2705 | 2824 | 2953 | 3045 | 3146 | 3266 | 3431 | 3597 | 3781 | 3928 | 4195 | 4489 | 4719 | 4867 | 4949 | 5253 | 5676 | 6596 |
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