Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/80-13 | 185/70-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.39 (594.2) | 23.2 (589.2) | -0.2 (-5) -0.8% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 73.49 (1866.73) | 72.88 (1851.03) | -0.62 (-15.71) -0.8% |
| Sidewall Height inches (mm) | 5.2 (132) | 5.1 (129.5) | -0.1 (-2.5) -1.9% |
| Revolutions per mile (km) | 862.12 (535.69) | 869.43 (540.24) | 7.32 (4.55) 0.8% |
185/70-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.83 mph (31.92 km/h) |
| 25 mph (40.23 km/h) | 24.79 mph (39.9 km/h) |
| 30 mph (48.28 km/h) | 29.75 mph (47.87 km/h) |
| 35 mph (56.33 km/h) | 34.71 mph (55.85 km/h) |
| 40 mph (64.37 km/h) | 39.66 mph (63.83 km/h) |
| 45 mph (72.42 km/h) | 44.62 mph (71.81 km/h) |
| 50 mph (80.47 km/h) | 49.58 mph (79.79 km/h) |
| 55 mph (88.51 km/h) | 54.54 mph (87.77 km/h) |
| 60 mph (96.56 km/h) | 59.5 mph (95.75 km/h) |
| 65 mph (104.61 km/h) | 64.45 mph (103.73 km/h) |
| 70 mph (112.65 km/h) | 69.41 mph (111.71 km/h) |
| 75 mph (120.7 km/h) | 74.37 mph (119.69 km/h) |
| 80 mph (128.75 km/h) | 79.33 mph (127.66 km/h) |
| 85 mph (136.79 km/h) | 84.28 mph (135.64 km/h) |
| 90 mph (144.84 km/h) | 89.24 mph (143.62 km/h) |
| 95 mph (152.89 km/h) | 94.2 mph (151.6 km/h) |
| 100 mph (160.93 km/h) | 99.16 mph (159.58 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 |
Better Fuel Economy Factory Ratios Increased Power
