Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/40-17 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.46 (595.8) | 23.74 (603) | 0.28 (7.2) 1.2% |
| Width inches (mm) | 8.07 (205) | 7.28 (185) | -0.79 (-20) -9.8% |
| Circum. inches (mm) | 73.69 (1871.76) | 74.58 (1894.38) | 0.89 (22.62) 1.2% |
| Sidewall Height inches (mm) | 3.23 (82) | 4.37 (111) | 1.14 (29) 35.4% |
| Revolutions per mile (km) | 859.8 (534.26) | 849.54 (527.88) | -10.27 (-6.38) -1.2% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.24 mph (32.58 km/h) |
| 25 mph (40.23 km/h) | 25.3 mph (40.72 km/h) |
| 30 mph (48.28 km/h) | 30.36 mph (48.86 km/h) |
| 35 mph (56.33 km/h) | 35.42 mph (57.01 km/h) |
| 40 mph (64.37 km/h) | 40.48 mph (65.15 km/h) |
| 45 mph (72.42 km/h) | 45.54 mph (73.3 km/h) |
| 50 mph (80.47 km/h) | 50.6 mph (81.44 km/h) |
| 55 mph (88.51 km/h) | 55.66 mph (89.58 km/h) |
| 60 mph (96.56 km/h) | 60.73 mph (97.73 km/h) |
| 65 mph (104.61 km/h) | 65.79 mph (105.87 km/h) |
| 70 mph (112.65 km/h) | 70.85 mph (114.02 km/h) |
| 75 mph (120.7 km/h) | 75.91 mph (122.16 km/h) |
| 80 mph (128.75 km/h) | 80.97 mph (130.3 km/h) |
| 85 mph (136.79 km/h) | 86.03 mph (138.45 km/h) |
| 90 mph (144.84 km/h) | 91.09 mph (146.59 km/h) |
| 95 mph (152.89 km/h) | 96.15 mph (154.74 km/h) |
| 100 mph (160.93 km/h) | 101.21 mph (162.88 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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