I believe the tint "number" refers to the percentage of light allowed to pass thru the film.

ie. 20% tint is darker than 50%.

Each state has its own regulations for aftermarket tint.


Oops - Richard313 - didn't see your post.

 

I agree.
The OP claims to have gone from 20% to 35% and it was not dark enough.

Seems to me that he is going "lighter."

 

To clear up the confusion, I made a mistake, I had 50% all round, and have changed it to 35% on the sides windows, and 20% on the rear.
I may go 20% all round later on in the year, sorry for the confusion caused.

On another note, my angel eye bulbs arrived today, so will be installing them this weekend, gonna look for the DIY now.

Installed the CF roundels yesterday, will put up pics asap.

 

can't wait to see the pix!!

 

Now we are speaking the same language.
Good luck with the new mods.