Just wanna see if anyone has done any comparison that can be shared...before and after tinting...as I can't seem to find any comparison made in this forum.My friend bought a thermometer and placed it in his E39 cabin to measure the interior cabin temperature when he parks his car under hot sun for an hour during lunch time. Normal thermometer off the shelf, few ringgit.Before tinting - it showed an average of about 48-52 degree celcius after about an hour under afternoon sun.After tinting - it showed an average of about 36-38 degree celcius after about an hour under afternoon sun.Tinting of his choice - 3M Crystalline 60 all round which includes front windscreen.Cost - Rm1,800Anyone done any comparison that can be shared so we know from experience we can rate ourselves the respective tinting brands versus cost and see what is the best value for money?Thank you