I've seen some 20% and 35% tints on a WW evo, but I don't know which one is should go with I live in SoCal, I had 35% all around in my 350z and it felt too light, but I'm scared to go too dark and attract too much attention from the police. I've seen pictures of WW evos with different tints, but different angles tend to make it seem darker or lighter than it really is.

 

Its up to you, you pretty much explained your answer in your question. I think the 35% would be nicer on a WW evo, the 20% might almost be too dark and look tacky

 

whatever tint you have in the front will be illegal so might as well go with a lighter one than darker.

 

I got 30% on my WW. I'll see if I can post some pics later.