I got my front windows tinted on my 19 ram crew to match my rear privacy glass. The reading on the rear privacy glass was 21%. I’ve always used lumar pinnacle or Stratos. I had a Grand Cherokee and F150 front windows tinted to match the rear privacy glass and they always matched up very well. Today they used 35% and it looks to light to me maybe it’s the panoramic sunroof and angle I’m looking at it. I even told them it’s to light. I guess lumar has currently only 15% or 35% they said 15 would be noticeable darker than the rear. I will upload pictures soon. 
