There are a lot of good reasons to want to tint car windows.  Whether someone is fighting the heat or trying to escape the blinding glare, it is possible to find the right product to do the job.  Some of the films are precut and in kits and others are available in rolls.  Most often, they will be accompanied by instructions on how to install it in a vehicle.  It is possible to hire a company to install it, but many would rather save the installation fee and do it themselves. 

There are also aesthetic reasons why people tint car windows.  Some people think that it is just another way to make their vehicle different from the others.  This personalization can also allow for a variety of different shades, hues and finishes.   This takes the average vehicle to another level of mystique and individuality. 

Some opt for this type of shading on their vehicle windows for privacy and anonymity.  Many people do not want to be recognized and use this as a way to travel undetected.  This is often the case with people who have high profile careers and are recognized easily.  This is why many limousines have darkened windows.  Their clients do not want people to look into the vehicle and they do not want to make the public known that they are in the vehicle. 

Heat is a big reason why most want to tint car windows.  Everyone has walked out to a vehicle that has been idle in a parking lot for an entire day and realized that it is comparable to an oven when the door is opened.  The air conditioner has to work overtime to cool the vehicle which ends up using excess fuel.  Of course, the heat can also damage the interior of a vehicle.  This is especially important in areas that have year round heat such as people living in tropical climates.  Repetitive exposure to heat in a vehicle can lead to the vinyl or leather cracking on the dash as well as the seats.  This can be a very expensive repair job which can be eliminated by opting to tint the car windows. 

The major difference in the tint for car windows is the VLT percentage or the visible light transmission percentage.  The lower the number, the less light is allowed into the vehicle.  Of course, there are usually laws or guidelines concerning the degree of VLT percentage that can be used on a vehicle.  These laws vary from one state to another and so it is in the best interest of the owner of the vehicle to find out which laws are in effect in the state in question before opting to shade the windows.  There are a few states that do not allow for film to be put on any windows in a vehicle, but a majority of them allow it to some degree.  Most of the other laws and guidelines are concerning which windows can and cannot be shaded, such as whether or not the windshield can have any type of film put on it.