Car window tinting laws vary by state, so it’s important to check your state’s laws, which are typically available on the state’s Department of Motor Vehicles website. For North Carolina residents, automotive window tinting laws can be reviewed on the NC DMV website.
At the time of this writing, NC window tinting laws indicate that vehicles with after-factory tinted windows must be checked during a North Carolina safety inspection. The windows cannot be darker than 32% as measured by a NC-approved window tint meter. Additionally, the window tint cannot extend more than 5 inches below the top of the windshield or below the AS1 line of the windshield (whichever is longer).
There are some medical and vehicle-specific exceptions to these guidelines, so it’s important to review the North Carolina DMV website for full, up-to-date details on NC car window tinting regulations.