Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 185/70-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 24.2 (614.6) | -1.14 (-29) -4.5% |
| Width inches (mm) | 7.09 (180) | 7.28 (185) | 0.2 (5) 2.8% |
| Circum. inches (mm) | 79.6 (2021.93) | 76.02 (1930.82) | -3.59 (-91.11) -4.5% |
| Sidewall Height inches (mm) | 5.67 (144) | 5.1 (129.5) | -0.57 (-14.5) -10.1% |
| Revolutions per mile (km) | 795.94 (494.58) | 833.5 (517.91) | 37.56 (23.34) 4.7% |
185/70-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.1 mph (30.74 km/h) |
| 25 mph (40.23 km/h) | 23.87 mph (38.42 km/h) |
| 30 mph (48.28 km/h) | 28.65 mph (46.1 km/h) |
| 35 mph (56.33 km/h) | 33.42 mph (53.79 km/h) |
| 40 mph (64.37 km/h) | 38.2 mph (61.47 km/h) |
| 45 mph (72.42 km/h) | 42.97 mph (69.16 km/h) |
| 50 mph (80.47 km/h) | 47.75 mph (76.84 km/h) |
| 55 mph (88.51 km/h) | 52.52 mph (84.53 km/h) |
| 60 mph (96.56 km/h) | 57.3 mph (92.21 km/h) |
| 65 mph (104.61 km/h) | 62.07 mph (99.89 km/h) |
| 70 mph (112.65 km/h) | 66.85 mph (107.58 km/h) |
| 75 mph (120.7 km/h) | 71.62 mph (115.26 km/h) |
| 80 mph (128.75 km/h) | 76.4 mph (122.95 km/h) |
| 85 mph (136.79 km/h) | 81.17 mph (130.63 km/h) |
| 90 mph (144.84 km/h) | 85.94 mph (138.31 km/h) |
| 95 mph (152.89 km/h) | 90.72 mph (146 km/h) |
| 100 mph (160.93 km/h) | 95.49 mph (153.68 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2121 | 2464 | 2654 | 2771 | 2897 | 2988 | 3087 | 3204 | 3367 | 3529 | 3710 | 3854 | 4116 | 4405 | 4630 | 4775 | 4856 | 5154 | 5569 | 6472 |
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