Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/45-15 | 185/70-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.5) | 24.2 (614.6) | 3 (76.1) 14.1% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 66.6 (1691.75) | 76.02 (1930.82) | 9.41 (239.08) 14.1% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 5.1 (129.5) | 2 (50.75) 64.4% |
| Revolutions per mile (km) | 951.29 (591.1) | 833.5 (517.91) | -117.79 (-73.19) -12.4% |
185/70-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.83 mph (36.74 km/h) |
| 25 mph (40.23 km/h) | 28.53 mph (45.92 km/h) |
| 30 mph (48.28 km/h) | 34.24 mph (55.1 km/h) |
| 35 mph (56.33 km/h) | 39.95 mph (64.29 km/h) |
| 40 mph (64.37 km/h) | 45.65 mph (73.47 km/h) |
| 45 mph (72.42 km/h) | 51.36 mph (82.65 km/h) |
| 50 mph (80.47 km/h) | 57.07 mph (91.84 km/h) |
| 55 mph (88.51 km/h) | 62.77 mph (101.02 km/h) |
| 60 mph (96.56 km/h) | 68.48 mph (110.21 km/h) |
| 65 mph (104.61 km/h) | 74.19 mph (119.39 km/h) |
| 70 mph (112.65 km/h) | 79.89 mph (128.57 km/h) |
| 75 mph (120.7 km/h) | 85.6 mph (137.76 km/h) |
| 80 mph (128.75 km/h) | 91.31 mph (146.94 km/h) |
| 85 mph (136.79 km/h) | 97.01 mph (156.13 km/h) |
| 90 mph (144.84 km/h) | 102.72 mph (165.31 km/h) |
| 95 mph (152.89 km/h) | 108.43 mph (174.49 km/h) |
| 100 mph (160.93 km/h) | 114.13 mph (183.68 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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