I don't want you to do nothing ilegal but you should go for 5-15% I got 5% and it looks awesome! I live in Oklahoma and the darker you can have is 25%, but never been pulled over for this reason, I've been pulled over for other reasons and the officers didn't say nothing about the darkness, they only toll me that the tint on windshield was to low it was one inch more than the legal. but the only problem its hard to me turning at night or reverse.