Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/70-12 | 185/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.09 (535.8) | 22.2 (563.8) | 1.1 (28) 5.2% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 66.27 (1683.27) | 69.73 (1771.23) | 3.46 (87.96) 5.2% |
| Sidewall Height inches (mm) | 4.55 (115.5) | 5.1 (129.5) | 0.55 (14) 12.1% |
| Revolutions per mile (km) | 956.08 (594.08) | 908.6 (564.58) | -47.48 (-29.5) -5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.05 mph (33.87 km/h) |
| 25 mph (40.23 km/h) | 26.31 mph (42.34 km/h) |
| 30 mph (48.28 km/h) | 31.57 mph (50.8 km/h) |
| 35 mph (56.33 km/h) | 36.83 mph (59.27 km/h) |
| 40 mph (64.37 km/h) | 42.09 mph (67.74 km/h) |
| 45 mph (72.42 km/h) | 47.35 mph (76.21 km/h) |
| 50 mph (80.47 km/h) | 52.61 mph (84.67 km/h) |
| 55 mph (88.51 km/h) | 57.87 mph (93.14 km/h) |
| 60 mph (96.56 km/h) | 63.14 mph (101.61 km/h) |
| 65 mph (104.61 km/h) | 68.4 mph (110.07 km/h) |
| 70 mph (112.65 km/h) | 73.66 mph (118.54 km/h) |
| 75 mph (120.7 km/h) | 78.92 mph (127.01 km/h) |
| 80 mph (128.75 km/h) | 84.18 mph (135.48 km/h) |
| 85 mph (136.79 km/h) | 89.44 mph (143.94 km/h) |
| 90 mph (144.84 km/h) | 94.7 mph (152.41 km/h) |
| 95 mph (152.89 km/h) | 99.96 mph (160.88 km/h) |
| 100 mph (160.93 km/h) | 105.23 mph (169.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2312 | 2686 | 2893 | 3021 | 3158 | 3257 | 3365 | 3493 | 3670 | 3847 | 4044 | 4201 | 4487 | 4802 | 5048 | 5205 | 5294 | 5618 | 6071 | 7055 |
Better Fuel Economy Factory Ratios Increased Power
