IS YOUR CAR MOD STREET LEGAL?
Instant compliance verification, legal limit metrics, statute codes, and penalty schedules. Built by automotive engineers and legal researchers.
Compliance Databases
Browse state-by-state legal constraints across multiple modification categories.
Window Tint Laws
Visible light transmission (VLT) limits, reflectivity limits, color restrictions, and medical waiver conditions.
Lighting & Underglow Laws
Legality of underglow kits, auxiliary driving lights, headlight bulb replacements, and colored accent lighting rules.
Exhaust & Decibel Laws
Maximum allowable decibel limits, catalytic converter requirements, tailpipe exit placements, and emissions standards.
Suspension & Lift Laws
Maximum frame heights, lift kit constraints, body drop restrictions, and bumper height regulations by state.
License Plates Laws
Legality of license plate covers, tinted frames, mounting positions, and dynamic digital plates.
Engine & Performance Laws
ECU tuning bans, cold air intake restrictions, engine swap compliance (CARB codes), and nitrous system limitations.
Most-Searched Jurisdictions
Frequently Asked Questions
Is aftermarket window tint legal in the United States?
Yes, aftermarket window tint is legal in most US states, but regulations vary. Most states mandate a minimum Visible Light Transmission (VLT) percentage on front side windows, ranging from 20% to 70%, while some states prohibit aftermarket tint entirely on front windows.
What does VLT percentage mean?
Visible Light Transmission (VLT) measures the amount of light that passes through a tinted window. A lower VLT percentage indicates a darker tint.