Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/50-14 | 185/70-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.28 (540.6) | 24.2 (614.6) | 2.91 (74) 13.7% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 66.86 (1698.34) | 76.02 (1930.82) | 9.15 (232.48) 13.7% |
| Sidewall Height inches (mm) | 3.64 (92.5) | 5.1 (129.5) | 1.46 (37) 40% |
| Revolutions per mile (km) | 947.6 (588.81) | 833.5 (517.91) | -114.09 (-70.89) -12% |
185/70-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.74 mph (36.59 km/h) |
| 25 mph (40.23 km/h) | 28.42 mph (45.74 km/h) |
| 30 mph (48.28 km/h) | 34.11 mph (54.89 km/h) |
| 35 mph (56.33 km/h) | 39.79 mph (64.04 km/h) |
| 40 mph (64.37 km/h) | 45.48 mph (73.19 km/h) |
| 45 mph (72.42 km/h) | 51.16 mph (82.33 km/h) |
| 50 mph (80.47 km/h) | 56.84 mph (91.48 km/h) |
| 55 mph (88.51 km/h) | 62.53 mph (100.63 km/h) |
| 60 mph (96.56 km/h) | 68.21 mph (109.78 km/h) |
| 65 mph (104.61 km/h) | 73.9 mph (118.93 km/h) |
| 70 mph (112.65 km/h) | 79.58 mph (128.07 km/h) |
| 75 mph (120.7 km/h) | 85.27 mph (137.22 km/h) |
| 80 mph (128.75 km/h) | 90.95 mph (146.37 km/h) |
| 85 mph (136.79 km/h) | 96.64 mph (155.52 km/h) |
| 90 mph (144.84 km/h) | 102.32 mph (164.67 km/h) |
| 95 mph (152.89 km/h) | 108 mph (173.82 km/h) |
| 100 mph (160.93 km/h) | 113.69 mph (182.96 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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