Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/65-13 | 185/65-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.96 (557.7) | 23.47 (596.1) | 1.51 (38.4) 6.9% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 68.98 (1752.07) | 73.73 (1872.7) | 4.75 (120.64) 6.9% |
| Sidewall Height inches (mm) | 4.48 (113.75) | 4.73 (120.25) | 0.26 (6.5) 5.7% |
| Revolutions per mile (km) | 918.54 (570.75) | 859.37 (533.99) | -59.17 (-36.77) -6.4% |
185/65-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.38 mph (34.4 km/h) |
| 25 mph (40.23 km/h) | 26.72 mph (43 km/h) |
| 30 mph (48.28 km/h) | 32.07 mph (51.6 km/h) |
| 35 mph (56.33 km/h) | 37.41 mph (60.21 km/h) |
| 40 mph (64.37 km/h) | 42.75 mph (68.81 km/h) |
| 45 mph (72.42 km/h) | 48.1 mph (77.41 km/h) |
| 50 mph (80.47 km/h) | 53.44 mph (86.01 km/h) |
| 55 mph (88.51 km/h) | 58.79 mph (94.61 km/h) |
| 60 mph (96.56 km/h) | 64.13 mph (103.21 km/h) |
| 65 mph (104.61 km/h) | 69.48 mph (111.81 km/h) |
| 70 mph (112.65 km/h) | 74.82 mph (120.41 km/h) |
| 75 mph (120.7 km/h) | 80.16 mph (129.01 km/h) |
| 80 mph (128.75 km/h) | 85.51 mph (137.61 km/h) |
| 85 mph (136.79 km/h) | 90.85 mph (146.21 km/h) |
| 90 mph (144.84 km/h) | 96.2 mph (154.81 km/h) |
| 95 mph (152.89 km/h) | 101.54 mph (163.41 km/h) |
| 100 mph (160.93 km/h) | 106.89 mph (172.02 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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