Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/65-15 | 185/65-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.47 (621.5) | 23.47 (596.1) | -1 (-25.4) -4.1% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 76.87 (1952.5) | 73.73 (1872.7) | -3.14 (-79.8) -4.1% |
| Sidewall Height inches (mm) | 4.73 (120.25) | 4.73 (120.25) | 0 (0) 0% |
| Revolutions per mile (km) | 824.25 (512.16) | 859.37 (533.99) | 35.12 (21.82) 4.3% |
185/65-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.18 mph (30.87 km/h) |
| 25 mph (40.23 km/h) | 23.98 mph (38.59 km/h) |
| 30 mph (48.28 km/h) | 28.77 mph (46.31 km/h) |
| 35 mph (56.33 km/h) | 33.57 mph (54.03 km/h) |
| 40 mph (64.37 km/h) | 38.37 mph (61.74 km/h) |
| 45 mph (72.42 km/h) | 43.16 mph (69.46 km/h) |
| 50 mph (80.47 km/h) | 47.96 mph (77.18 km/h) |
| 55 mph (88.51 km/h) | 52.75 mph (84.9 km/h) |
| 60 mph (96.56 km/h) | 57.55 mph (92.61 km/h) |
| 65 mph (104.61 km/h) | 62.34 mph (100.33 km/h) |
| 70 mph (112.65 km/h) | 67.14 mph (108.05 km/h) |
| 75 mph (120.7 km/h) | 71.93 mph (115.77 km/h) |
| 80 mph (128.75 km/h) | 76.73 mph (123.49 km/h) |
| 85 mph (136.79 km/h) | 81.53 mph (131.2 km/h) |
| 90 mph (144.84 km/h) | 86.32 mph (138.92 km/h) |
| 95 mph (152.89 km/h) | 91.12 mph (146.64 km/h) |
| 100 mph (160.93 km/h) | 95.91 mph (154.36 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2187 | 2541 | 2736 | 2857 | 2987 | 3080 | 3183 | 3304 | 3471 | 3639 | 3825 | 3974 | 4244 | 4541 | 4774 | 4923 | 5007 | 5314 | 5742 | 6672 |
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