What is the tint to block - Visual, UV and or IR?
	
	
		The tinting question to me comes down to what are you trying to achieve.
 
Do you want to keep people from seeing you, (common in Southern California it appears), block Ultra Violet, the rays that fade the interior, or block Infra Red, the rays that heat things up, or all of above.
 
For me, in Western Canada, we have a sun that often sit lows on the horizon, (expect the same in Oz), and the rays coming thru the drivers side windows can really make driving uncomfortable - as in sunburn - left arm here, right arm in Oz I suppose).
 
In the winter we go from bright sun to cloudy and dull, so for me, dark tint on the side windows is not desireable.
 
As such, I have installed a clear tint that blocks Infra Red radiation - about 30 percent of it anyway. That is enough however to say that the decrease in heating/burning effect is noticeable. The clear film contains a Low Emisitivity material similar to what is put in what is called Low E glass when used in building windows.
 
Low E glass is also common in most domestic vehicles produced by GM and Ford, but seemingly not known in Europe - always cloudy there I guess. Here, now the windscreens and side windows etc are all Low E glass primarily as that allows the manufacturers to downsize the air conditioners and hence improve overall, their CAFE, (Corporate Average Fuel Efficiency).
 
I just wish Land Rover made a Low E windscreen - sound rejecting is available, (the little ear symbol), but heat rejecting, not yet.