IS MY MOD LEGAL?

Vehicle Modification Guides

Comprehensive guides to vehicle modification laws across the United States.

State Guides

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Modification Guides

Aftermarket Exhaust Laws: Everything You Need to Know

Compare aftermarket exhaust laws across all 50 states. See which states allow it and which don't.

Exhaust Noise Laws: Everything You Need to Know

Compare exhaust noise laws across all 50 states. See which states allow it and which don't.

Headlight & Taillight Tint Laws: Everything You Need to Know

Compare headlight & taillight tint laws across all 50 states. See which states allow it and which don't.

License Plate Frames Laws: Everything You Need to Know

Compare license plate frames laws across all 50 states. See which states allow it and which don't.

Lift Kits Laws: Everything You Need to Know

Compare lift kits laws across all 50 states. See which states allow it and which don't.

Light Bars & LED Lighting Laws: Everything You Need to Know

Compare light bars & led lighting laws across all 50 states. See which states allow it and which don't.

Lowering Laws: Everything You Need to Know

Compare lowering laws across all 50 states. See which states allow it and which don't.

Underglow Laws: Everything You Need to Know

Compare underglow laws across all 50 states. See which states allow it and which don't.

Wheel & Tire Protrusion Laws: Everything You Need to Know

Compare wheel & tire protrusion laws across all 50 states. See which states allow it and which don't.

Window Banners Laws: Everything You Need to Know

Compare window banners laws across all 50 states. See which states allow it and which don't.

Window Tint Laws: Everything You Need to Know

Compare window tint laws across all 50 states. See which states allow it and which don't.

State Rankings

Most Permissive States for Aftermarket Exhaust (2026)Most Permissive States for Exhaust Noise (2026)Most Permissive States for Headlight & Taillight Tint (2026)Most Permissive States for License Plate Frames (2026)Most Permissive States for Lift Kits (2026)Most Permissive States for Light Bars & LED Lighting (2026)Most Permissive States for Lowering (2026)Most Permissive States for Underglow (2026)Most Permissive States for Wheel & Tire Protrusion (2026)Most Permissive States for Window Banners (2026)Most Permissive States for Window Tint (2026)Strictest States for Aftermarket Exhaust (2026)Strictest States for Exhaust Noise (2026)Strictest States for Headlight & Taillight Tint (2026)Strictest States for License Plate Frames (2026)Strictest States for Lift Kits (2026)Strictest States for Light Bars & LED Lighting (2026)Strictest States for Lowering (2026)Strictest States for Underglow (2026)Strictest States for Wheel & Tire Protrusion (2026)Strictest States for Window Banners (2026)Strictest States for Window Tint (2026)