Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/70-13 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.2 (589.2) | 23.74 (603) | 0.54 (13.8) 2.3% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 72.88 (1851.03) | 74.58 (1894.38) | 1.71 (43.35) 2.3% |
| Sidewall Height inches (mm) | 5.1 (129.5) | 4.37 (111) | -0.73 (-18.5) -14.3% |
| Revolutions per mile (km) | 869.43 (540.24) | 849.54 (527.88) | -19.9 (-12.36) -2.3% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.47 mph (32.94 km/h) |
| 25 mph (40.23 km/h) | 25.59 mph (41.18 km/h) |
| 30 mph (48.28 km/h) | 30.7 mph (49.41 km/h) |
| 35 mph (56.33 km/h) | 35.82 mph (57.65 km/h) |
| 40 mph (64.37 km/h) | 40.94 mph (65.88 km/h) |
| 45 mph (72.42 km/h) | 46.05 mph (74.12 km/h) |
| 50 mph (80.47 km/h) | 51.17 mph (82.35 km/h) |
| 55 mph (88.51 km/h) | 56.29 mph (90.59 km/h) |
| 60 mph (96.56 km/h) | 61.41 mph (98.82 km/h) |
| 65 mph (104.61 km/h) | 66.52 mph (107.06 km/h) |
| 70 mph (112.65 km/h) | 71.64 mph (115.29 km/h) |
| 75 mph (120.7 km/h) | 76.76 mph (123.53 km/h) |
| 80 mph (128.75 km/h) | 81.87 mph (131.76 km/h) |
| 85 mph (136.79 km/h) | 86.99 mph (140 km/h) |
| 90 mph (144.84 km/h) | 92.11 mph (148.23 km/h) |
| 95 mph (152.89 km/h) | 97.23 mph (156.47 km/h) |
| 100 mph (160.93 km/h) | 102.34 mph (164.7 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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