Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/80-14 | 185/65-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.02 (635.6) | 23.47 (596.1) | -1.56 (-39.5) -6.2% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 78.61 (1996.8) | 73.73 (1872.7) | -4.89 (-124.09) -6.2% |
| Sidewall Height inches (mm) | 5.51 (140) | 4.73 (120.25) | -0.78 (-19.75) -14.1% |
| Revolutions per mile (km) | 805.96 (500.8) | 859.37 (533.99) | 53.41 (33.19) 6.6% |
185/65-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.76 mph (30.19 km/h) |
| 25 mph (40.23 km/h) | 23.45 mph (37.73 km/h) |
| 30 mph (48.28 km/h) | 28.14 mph (45.28 km/h) |
| 35 mph (56.33 km/h) | 32.82 mph (52.83 km/h) |
| 40 mph (64.37 km/h) | 37.51 mph (60.37 km/h) |
| 45 mph (72.42 km/h) | 42.2 mph (67.92 km/h) |
| 50 mph (80.47 km/h) | 46.89 mph (75.47 km/h) |
| 55 mph (88.51 km/h) | 51.58 mph (83.01 km/h) |
| 60 mph (96.56 km/h) | 56.27 mph (90.56 km/h) |
| 65 mph (104.61 km/h) | 60.96 mph (98.11 km/h) |
| 70 mph (112.65 km/h) | 65.65 mph (105.65 km/h) |
| 75 mph (120.7 km/h) | 70.34 mph (113.2 km/h) |
| 80 mph (128.75 km/h) | 75.03 mph (120.75 km/h) |
| 85 mph (136.79 km/h) | 79.72 mph (128.29 km/h) |
| 90 mph (144.84 km/h) | 84.41 mph (135.84 km/h) |
| 95 mph (152.89 km/h) | 89.1 mph (143.39 km/h) |
| 100 mph (160.93 km/h) | 93.79 mph (150.93 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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