When a car drifts to one side even on a flat road, it indicates a misalignment issue known as "camber." Camber refers to the angle at which the wheels tilt inward or outward from the vertical axis. If the camber is not set correctly, it can cause the car to pull to one side.
By switching the front tires, you may have inadvertently corrected the camber angle, but this is not a reliable or long-term solution. The camber should be properly adjusted by a qualified mechanic using specialized equipment.
Here are some possible causes of the drifting issue:
1. Incorrect Camber: As mentioned earlier, improper camber angles can cause the car to drift to one side.
2. Worn Suspension Components: Worn or damaged suspension components, such as control arms, bushings, or ball joints, can affect the alignment and cause drifting.
3. Uneven Tire Wear: If the tires are not properly inflated or have uneven wear, it can lead to drifting.
4. Misaligned Steering Components: Misalignment in the steering system, such as the steering rack or tie rods, can also contribute to the drifting problem.
5. Faulty Wheel Alignment: If the car has been in an accident or has gone over a large pothole, the wheel alignment might have been affected, causing the drifting issue.
It is essential to have your car inspected by a professional mechanic to properly diagnose the root cause of the drifting problem and ensure safe and reliable driving. They can assess the alignment, suspension, and steering components and make the necessary adjustments to correct the issue.