Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-13 | 185/70-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.93 (607.7) | 23.2 (589.2) | -0.73 (-18.5) -3% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 75.16 (1909.15) | 72.88 (1851.03) | -2.29 (-58.12) -3% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 5.1 (129.5) | -0.36 (-9.25) -6.7% |
| Revolutions per mile (km) | 842.97 (523.79) | 869.43 (540.24) | 26.47 (16.45) 3.1% |
185/70-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.39 mph (31.21 km/h) |
| 25 mph (40.23 km/h) | 24.24 mph (39.01 km/h) |
| 30 mph (48.28 km/h) | 29.09 mph (46.81 km/h) |
| 35 mph (56.33 km/h) | 33.93 mph (54.61 km/h) |
| 40 mph (64.37 km/h) | 38.78 mph (62.41 km/h) |
| 45 mph (72.42 km/h) | 43.63 mph (70.22 km/h) |
| 50 mph (80.47 km/h) | 48.48 mph (78.02 km/h) |
| 55 mph (88.51 km/h) | 53.33 mph (85.82 km/h) |
| 60 mph (96.56 km/h) | 58.17 mph (93.62 km/h) |
| 65 mph (104.61 km/h) | 63.02 mph (101.42 km/h) |
| 70 mph (112.65 km/h) | 67.87 mph (109.22 km/h) |
| 75 mph (120.7 km/h) | 72.72 mph (117.03 km/h) |
| 80 mph (128.75 km/h) | 77.56 mph (124.83 km/h) |
| 85 mph (136.79 km/h) | 82.41 mph (132.63 km/h) |
| 90 mph (144.84 km/h) | 87.26 mph (140.43 km/h) |
| 95 mph (152.89 km/h) | 92.11 mph (148.23 km/h) |
| 100 mph (160.93 km/h) | 96.96 mph (156.04 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2213 | 2570 | 2768 | 2890 | 3022 | 3116 | 3220 | 3342 | 3512 | 3681 | 3870 | 4020 | 4293 | 4595 | 4830 | 4981 | 5065 | 5376 | 5809 | 6751 |
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