Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/50-17 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.28 (616.8) | 23.74 (603) | -0.54 (-13.8) -2.2% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 76.29 (1937.73) | 74.58 (1894.38) | -1.71 (-43.35) -2.2% |
| Sidewall Height inches (mm) | 3.64 (92.5) | 4.37 (111) | 0.73 (18.5) 20% |
| Revolutions per mile (km) | 830.53 (516.07) | 849.54 (527.88) | 19.01 (11.81) 2.3% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.55 mph (31.47 km/h) |
| 25 mph (40.23 km/h) | 24.44 mph (39.33 km/h) |
| 30 mph (48.28 km/h) | 29.33 mph (47.2 km/h) |
| 35 mph (56.33 km/h) | 34.22 mph (55.07 km/h) |
| 40 mph (64.37 km/h) | 39.11 mph (62.93 km/h) |
| 45 mph (72.42 km/h) | 43.99 mph (70.8 km/h) |
| 50 mph (80.47 km/h) | 48.88 mph (78.67 km/h) |
| 55 mph (88.51 km/h) | 53.77 mph (86.53 km/h) |
| 60 mph (96.56 km/h) | 58.66 mph (94.4 km/h) |
| 65 mph (104.61 km/h) | 63.55 mph (102.27 km/h) |
| 70 mph (112.65 km/h) | 68.43 mph (110.13 km/h) |
| 75 mph (120.7 km/h) | 73.32 mph (118 km/h) |
| 80 mph (128.75 km/h) | 78.21 mph (125.87 km/h) |
| 85 mph (136.79 km/h) | 83.1 mph (133.73 km/h) |
| 90 mph (144.84 km/h) | 87.99 mph (141.6 km/h) |
| 95 mph (152.89 km/h) | 92.87 mph (149.47 km/h) |
| 100 mph (160.93 km/h) | 97.76 mph (157.33 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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