I assume that Praf meant as follows.
'This feature is provided by TATA Motors to move the OVRM assembly backwards so as to protect it to an extent from breaking. When we have already moved the assembly backward/outward, there is not much play left for the mirror assembly to move in case of a hit.'
However in highways, its not relevant since this small play/outward movement provision provided is not meant for highways. (this adjustment will not protect it from hits or even a brushing at highway speeds.
This feature is meant for City - in crowded market streets and also while it is parked in crowded places where people or cattle can rub the OVRM while they walk past very close to the car and then again have to move further close to give way for a two wheeler or 3 wheeler pushing them.
In City driving when it is single road, it is better to position the mirror assembly in its original position and adjust accordingly (seeing a portion of the rear part) to make us alert on bikes cutting from left side.
I am fully aware of the reason for this feature. What I would like to say is that by moving the mirror outward a little does not, in any way, reduce the effectiveness of this feature.
Normal position
adjusted position
Max position of the assembly in case of somebody hitting it.
As you can see, there is not much difference between the normal and the adjusted position.
I would also like to point out that by having this type of adjustment we are only trying to eliminate the blind spot which is there in normal text book setting and not create a different blind spot. (like blinding bikes coming close to the side of the car.) So this type of adjustment is good for both city as well as highway.
The idea is while seated in the correct driving position, when we move just the eye to glance at the mirror, the mirror should not reflect any portion of the car. But if you turn your head to look at the mirror you should be able to see the just the side line of your car.
In this type of adjustment you will be able to see any bike or whatever which is as close to your car (say a couple of inches) by just moving your eye to to the mirror and still can see the side of the car by turning your head to look at the mirror.
You can try with the passenger side mirror and see the result. Initially you might feel uncomfortable not seeing the back of the car in the view. I too felt the same. But after some days I got used to it and always follow this kind of adjustment.
Dear Highway Ranger, I mean that the feature is to safeguard the mirror from breaking. we are trying to use this feature for best view but this might affect the assy functionality.in long run like rattlimg etc. I dint mean that it will hinder the purpose why TML added this feature.
Drive safe!
Yes, that factor has been taken into consideration. Though I do not think it will be an issue, we should try and see what we can do internally to get just the mirror to move out without moving the entire assembly. In the meantime, this helps.
BTW, this issue is only with the driver side mirror. The passenger side mirror works fine.