Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/80-15 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.65 (677) | 23.74 (603) | -2.91 (-74) -10.9% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 83.73 (2126.86) | 74.58 (1894.38) | -9.15 (-232.48) -10.9% |
| Sidewall Height inches (mm) | 5.83 (148) | 4.37 (111) | -1.46 (-37) -25% |
| Revolutions per mile (km) | 756.68 (470.18) | 849.54 (527.88) | 92.86 (57.7) 12.3% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.81 mph (28.67 km/h) |
| 25 mph (40.23 km/h) | 22.27 mph (35.84 km/h) |
| 30 mph (48.28 km/h) | 26.72 mph (43 km/h) |
| 35 mph (56.33 km/h) | 31.17 mph (50.17 km/h) |
| 40 mph (64.37 km/h) | 35.63 mph (57.34 km/h) |
| 45 mph (72.42 km/h) | 40.08 mph (64.5 km/h) |
| 50 mph (80.47 km/h) | 44.53 mph (71.67 km/h) |
| 55 mph (88.51 km/h) | 48.99 mph (78.84 km/h) |
| 60 mph (96.56 km/h) | 53.44 mph (86.01 km/h) |
| 65 mph (104.61 km/h) | 57.9 mph (93.17 km/h) |
| 70 mph (112.65 km/h) | 62.35 mph (100.34 km/h) |
| 75 mph (120.7 km/h) | 66.8 mph (107.51 km/h) |
| 80 mph (128.75 km/h) | 71.26 mph (114.67 km/h) |
| 85 mph (136.79 km/h) | 75.71 mph (121.84 km/h) |
| 90 mph (144.84 km/h) | 80.16 mph (129.01 km/h) |
| 95 mph (152.89 km/h) | 84.62 mph (136.18 km/h) |
| 100 mph (160.93 km/h) | 89.07 mph (143.34 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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