Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/80-13 | 185/70-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.65 (626.2) | 23.2 (589.2) | -1.46 (-37) -5.9% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 77.45 (1967.27) | 72.88 (1851.03) | -4.58 (-116.24) -5.9% |
| Sidewall Height inches (mm) | 5.83 (148) | 5.1 (129.5) | -0.73 (-18.5) -12.5% |
| Revolutions per mile (km) | 818.06 (508.32) | 869.43 (540.24) | 51.37 (31.92) 6.3% |
185/70-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.82 mph (30.29 km/h) |
| 25 mph (40.23 km/h) | 23.52 mph (37.86 km/h) |
| 30 mph (48.28 km/h) | 28.23 mph (45.43 km/h) |
| 35 mph (56.33 km/h) | 32.93 mph (53 km/h) |
| 40 mph (64.37 km/h) | 37.64 mph (60.57 km/h) |
| 45 mph (72.42 km/h) | 42.34 mph (68.14 km/h) |
| 50 mph (80.47 km/h) | 47.05 mph (75.71 km/h) |
| 55 mph (88.51 km/h) | 51.75 mph (83.28 km/h) |
| 60 mph (96.56 km/h) | 56.45 mph (90.86 km/h) |
| 65 mph (104.61 km/h) | 61.16 mph (98.43 km/h) |
| 70 mph (112.65 km/h) | 65.86 mph (106 km/h) |
| 75 mph (120.7 km/h) | 70.57 mph (113.57 km/h) |
| 80 mph (128.75 km/h) | 75.27 mph (121.14 km/h) |
| 85 mph (136.79 km/h) | 79.98 mph (128.71 km/h) |
| 90 mph (144.84 km/h) | 84.68 mph (136.28 km/h) |
| 95 mph (152.89 km/h) | 89.39 mph (143.85 km/h) |
| 100 mph (160.93 km/h) | 94.09 mph (151.43 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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