State Lift Laws
Rough Country Suspension Systems advises that you check your state and local ordinances prior to installing a suspension kit or other aftermarket vehicle modification. While some states have almost no restrictions, others have many regulations concerning just what is and isn't considered street-legal. To ensure your purchase falls within your state's guidelines, call your local DMV or check this amazingly handy website: liftlaws.com
where you can view each state's requisites for off-road alterations.
Furthermore, different insurance companies may handle coverage of a modified vehicle differently. Some policies do not cover modifications at all, while others go so far as to provide extra coverage for the off-road components themselves. Always check with your insurance carrier prior to upgrading the vehicle to ensure your coverage remains sufficient.