Complete Guide to Vehicle Modification Laws in West Virginia
West Virginia has its own patchwork of rules covering everything from ride height to window tint, and the details matter if you want to stay street-legal. This guide breaks down the most common modifications enthusiasts ask about, with the figures below verified against primary statute text (August 2026). Every modification above links to its full law page with exact limits, statute citations, and exceptions — or browse every West Virginia mod law in one place, free.
Wheel & Tire Protrusion
Status: Legal
Good news for wheel and tire fitment enthusiasts: West Virginia has no fender, mudguard, splash-guard, or flap requirement and no limit on tire protrusion. There's no protrusion limit written into the law, so aggressive offsets and wider tires aren't restricted on this front. See the wheel and tire protrusion laws page for more detail.
Underglow
Status: Conditional
Underglow lighting is legal in West Virginia, including while the vehicle is driving, but it comes with strict conditions. The restrictions are: no flashing (emergency vehicles only), red and blue are reserved colors, and beams over 300 candlepower must be aimed within 75 feet. Underglow lighting must not be red or blue, must not flash or strobe, and must not be visible while the vehicle is in motion on public roads. This is codified under W. Va. Code § 17C-15-26. Check the underglow laws page before installing a kit.
Exhaust Noise
Status: Conditional
There's no statewide decibel limit for passenger cars in West Virginia. However, a muffler in good working order is required, and your exhaust may not produce excessive or unusual noise. Cutouts or bypasses are specifically prohibited, and straight pipes or gutted mufflers are not allowed. This falls under W. Va. Code § 17C-15-34. More detail is available on the exhaust noise laws page.
Lift Kits
Status: Conditional
Lifting your truck or SUV in West Virginia means staying within the state's bumper height band. For vehicles at or under 10,000 lb GVWR, front and rear bumper height must fall between 6 and 31 inches. Lift blocks are prohibited on the front suspension, and the maximum body-to-frame lift is 3 inches. This is governed by W. Va. Code § 17C-15-48. Full specifics live on the lift kit laws page.
Aftermarket Exhaust
Status: Conditional
Swapping your exhaust system is legal in West Virginia, but the replacement still has to meet the same core rules as stock exhaust. Cutouts are prohibited, a muffler is required, and modifications that make the exhaust louder than the originally installed muffler are specifically prohibited by statute. Removing a catalytic converter is prohibited under federal law. You must maintain a properly functioning muffler and exhaust system, keep noise within reasonable limits, and retain catalytic converters on vehicles that were originally equipped with them. This is addressed under W. Va. Code § 17C-15-34. See the aftermarket exhaust laws page for full details.
License Plate Frames
Status: Conditional
Plate frames are fine in West Virginia as long as they don't cover anything up. The plate must remain clearly visible and legible, kept free from foreign materials that obscure it. There's no express ban on covers, but a cover counts as a "foreign material" if it obscures the plate — and the whole plate must stay visible, including the plate number, letters, and validation stickers. This is covered under W. Va. Code § 17A-3-15. Learn more on the license plate frame laws page.
Window Tint
Status: Conditional
West Virginia's tint law sets a minimum of 35% VLT across the board: front side windows, rear side windows, and the back window all require at least 35% VLT. Darker limits can apply behind the driver on some larger vehicles.
Differs by vehicle:
- SUVs: Front side windows require a minimum of 35% VLT; trucks, buses, and MPVs are exempt behind the driver.
- Trucks: Front side windows require a minimum of 35% VLT; trucks, buses, and MPVs are exempt behind the driver.
- Vans: Front side windows require a minimum of 35% VLT; trucks, buses, and MPVs are exempt behind the driver.
This is governed by W. Va. Code § 17C-15-36a. Full breakdown on the window tint laws page.
Light Bars & LED Lighting
Status: Conditional
Light bars and auxiliary LED lighting are allowed in West Virginia, but usage while driving is limited. No cover is required on these lights, but only four auxiliary, spot, or front lamps over 300 candlepower may be lit at one time on a highway. There's also a 75-foot aiming rule for beam placement. This falls under W. Va. Code §§ 17C-15-25(b) and 17C-15-26. See the light bar laws page for the specifics.
Headlight & Taillight Tint
Status: Illegal
Smoked or tinted film on headlights and taillights is not permitted in West Virginia. Film is not permitted on either. Headlights must emit white light and taillights must show red at the required visibility distance — tint that dims or discolors either violates these color requirements. This is enforced under W. Va. Code §§ 17C-15-4, 17C-15-5, and 17C-15-26. Details are on the headlight and taillight tint laws page.
Lowering
Status: Conditional
West Virginia sets a hard floor for how low you can go. For vehicles up to 10,000 lb GVWR, front and rear bumper height may be no less than 6 inches and no more than 31 inches. This is the same bumper-height standard that governs lift kits, found under W. Va. Code § 17C-15-48. Check the lowering laws page for more.
Window Banners
Status: Conditional
Sun-screening devices on the windshield are limited to a narrow strip: they may be used only along the top of the windshield and may not extend below the AS-1 line or more than 5 inches from the top, whichever is closer to the top. The material must be non-reflective and not red, yellow, or amber. Because the law requires the material to be transparent, a printed or opaque banner is not legal in West Virginia — only a clear tint band along the top of the windshield qualifies. This falls under W. Va. Code § 17C-15-36a, with obstruction rules under § 17C-15-36. See the window banner laws page for the full rule.
This guide is for informational purposes only. Data is AI-extracted from public statutes and may contain errors. Always verify with local authorities.