It is common for many mechanics to believe that the orientation of a strut mount does not matter, however there are actually a few reasons why it can make a difference. In fact, some carmakers have even specified certain orientations for their strut mounts. Here are a few things to keep in mind:
The first reason has to do with how the weight of the vehicle is distributed. When a car is at rest, most of its weight is concentrated over the front wheels. This means that when you turn the steering wheel, the majority of the load transfers to the outside front tire. As a result, if your strut mount is incorrectly oriented, this can cause premature wear on your tires and suspension components.
Another potential issue has to do with ride quality. If your strut mount is not properly aligned, it can cause your shocks and struts to work harder than they should have to in order to compensate. This can lead to a rougher ride as well as decreased handling and performance.
So while it may not seem like something that would make much of a difference, paying attention to the orientation of your strut mounts can actually be important for both safety and performance reasons!