Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-14 | 185/65-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.34 (516.6) | 23.47 (596.1) | 3.13 (79.5) 15.4% |
| Width inches (mm) | 4.53 (115) | 7.28 (185) | 2.76 (70) 60.9% |
| Circum. inches (mm) | 63.9 (1622.95) | 73.73 (1872.7) | 9.83 (249.76) 15.4% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 4.73 (120.25) | 1.56 (39.75) 49.4% |
| Revolutions per mile (km) | 991.62 (616.16) | 859.37 (533.99) | -132.25 (-82.18) -13.3% |
185/65-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.08 mph (37.14 km/h) |
| 25 mph (40.23 km/h) | 28.85 mph (46.43 km/h) |
| 30 mph (48.28 km/h) | 34.62 mph (55.71 km/h) |
| 35 mph (56.33 km/h) | 40.39 mph (65 km/h) |
| 40 mph (64.37 km/h) | 46.16 mph (74.28 km/h) |
| 45 mph (72.42 km/h) | 51.93 mph (83.57 km/h) |
| 50 mph (80.47 km/h) | 57.69 mph (92.85 km/h) |
| 55 mph (88.51 km/h) | 63.46 mph (102.14 km/h) |
| 60 mph (96.56 km/h) | 69.23 mph (111.42 km/h) |
| 65 mph (104.61 km/h) | 75 mph (120.71 km/h) |
| 70 mph (112.65 km/h) | 80.77 mph (129.99 km/h) |
| 75 mph (120.7 km/h) | 86.54 mph (139.28 km/h) |
| 80 mph (128.75 km/h) | 92.31 mph (148.56 km/h) |
| 85 mph (136.79 km/h) | 98.08 mph (157.85 km/h) |
| 90 mph (144.84 km/h) | 103.85 mph (167.13 km/h) |
| 95 mph (152.89 km/h) | 109.62 mph (176.42 km/h) |
| 100 mph (160.93 km/h) | 115.39 mph (185.7 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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