You probably know that you should have your wheels balanced every time you change your tire, but you do not have to wait for you to tell your mechanic to have the wheel alignment service. Sometimes you can tell that your car is in need of alignment if you have difficulty steering in a straight line and find the car pulls slightly to the left or to the right.
But as the wheels you slowly go out of alignment may be difficult to detect because you are slowly becoming accustomed to the way your car handles.
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That is why it is important to have your wheels checked at least every six months to ensure that the alignment is not required.
So, why do you need to have your wheels aligned? Think about it this way, all four wheels of your vehicle must be perfectly perpendicular to the ground and parallel to each other. If one or two of these wheels are not aligned along the same plane you will need to adjust your steering direction to compensate for the tires tend to drag your car in a different direction.
In simple terms, your tires will wear unevenly and which are not parallel would be 'dragged' on the surface of the road and they will wear out faster.
Although this description is a little excessive, wheel alignment simply needs to exit to a very small degree to cause damage to your tires and, over a period of time, it will be visible wear leads to the tire should be replaced.