Why are the tilt angles of the left and right rearview mirrors different?
2 Answers
Because the owner did not adjust them properly, they will be the same after adjustment. Moreover, the mirrored images reflected by the two rearview mirrors do have certain differences. Left rearview mirror adjustment: Vertical position: The ground area should occupy the center of the mirror. Horizontal position: While ensuring that the lowest point of the rear wheel touching the ground is visible, try to keep the car body occupying 1/4 of the mirror surface. Right rearview mirror adjustment: Since the driver's seat is on the left side, it is more difficult for the driver to grasp the situation on the right side of the car. Therefore, when adjusting the vertical position of the right rearview mirror, the ground area should occupy 2/3 of the mirror surface, allowing visibility of the wheel arch (the curved, protruding part above the wheel, resembling an eyebrow). The horizontal position should be adjusted so that the car body occupies 1/4 of the mirror surface.
I've noticed that uneven tilt angles between left and right side mirrors are quite common. This may stem from unstable mirror base installation or loose screws causing the mirror body to wobble and shift; or the vehicle might have experienced minor collisions with slightly deformed mirror brackets not repaired promptly; for older cars, worn or deformed internal gears or springs in the mirror adjustment mechanism can also cause angle deviations. When adjusting my car, I first sit upright in the driver's seat and try manually aligning with the adjustment knob - if that doesn't work, I check whether the rearview mirror has aged or has scratches affecting visibility; for power mirrors, test the responsiveness of the electric control buttons. I recommend making it a habit to tighten screws quarterly to prevent loosening. Misaligned mirror angles during reversing increase blind spot risks - if DIY fixes fail, visit a professional shop for calibration.