Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/65-13 | 185/70-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.49 (596.7) | 23.2 (589.2) | -0.3 (-7.5) -1.3% |
| Width inches (mm) | 8.07 (205) | 7.28 (185) | -0.79 (-20) -9.8% |
| Circum. inches (mm) | 73.8 (1874.59) | 72.88 (1851.03) | -0.93 (-23.56) -1.3% |
| Sidewall Height inches (mm) | 5.25 (133.25) | 5.1 (129.5) | -0.15 (-3.75) -2.8% |
| Revolutions per mile (km) | 858.51 (533.45) | 869.43 (540.24) | 10.93 (6.79) 1.3% |
185/70-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.75 mph (31.78 km/h) |
| 25 mph (40.23 km/h) | 24.69 mph (39.73 km/h) |
| 30 mph (48.28 km/h) | 29.62 mph (47.67 km/h) |
| 35 mph (56.33 km/h) | 34.56 mph (55.62 km/h) |
| 40 mph (64.37 km/h) | 39.5 mph (63.56 km/h) |
| 45 mph (72.42 km/h) | 44.43 mph (71.51 km/h) |
| 50 mph (80.47 km/h) | 49.37 mph (79.46 km/h) |
| 55 mph (88.51 km/h) | 54.31 mph (87.4 km/h) |
| 60 mph (96.56 km/h) | 59.25 mph (95.35 km/h) |
| 65 mph (104.61 km/h) | 64.18 mph (103.29 km/h) |
| 70 mph (112.65 km/h) | 69.12 mph (111.24 km/h) |
| 75 mph (120.7 km/h) | 74.06 mph (119.18 km/h) |
| 80 mph (128.75 km/h) | 78.99 mph (127.13 km/h) |
| 85 mph (136.79 km/h) | 83.93 mph (135.08 km/h) |
| 90 mph (144.84 km/h) | 88.87 mph (143.02 km/h) |
| 95 mph (152.89 km/h) | 93.81 mph (150.97 km/h) |
| 100 mph (160.93 km/h) | 98.74 mph (158.91 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
