Where did you go to get it tinted? is that 5% on top of the factory tint? and what wheels and specs are those?
I've always taken my car to Tommy's Window Tinting in Portland. They offer a lifetime warranty on their work, but I've never had to use it. 5% was added to the fronts. They said factory tint was 25%, they added 18% on top of that. Tested and the results were 4%, a near match.
Wheels specs are here, http://www.mazdas247.com/forum/show...-your-wheels&p=6250349&viewfull=1#post6250349