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No. A car magnet sign will stick only where the specific panel is magnetic-compatible and smooth and flat enough for the entire sign to sit flush. Aluminum, fiberglass, and plastic panels are examples of surfaces that magnetic signs will not hold to. Check the exact spot you plan to use; different panels on the same vehicle may not be made of the same material.
What makes a car panel compatible with a magnetic sign?
Two conditions matter: the panel must attract a magnet, and its shape must let the sign make full, even contact. A sign that attaches to one part of a vehicle is not necessarily suitable elsewhere on it.
Magnetic-compatible material
Magnetic sign makers identify aluminum, fiberglass, and plastic as examples of nonmagnetic surfaces that will not hold their vehicle magnets. Check the actual panel at the intended location rather than relying on the vehicle’s make, model, badge, or another successful test spot. See Hadrus’s vehicle magnet guidance and Signs.com’s installation and maintenance guidance.
Smooth, flat shape
The whole magnet should lie flush against a smooth, flat area. Curves, bumps, raised molding, or other features that interrupt contact can make a spot unsuitable even if it attracts a magnet. Signs.com specifies a flat, smooth, magnet-compatible vehicle surface in its car magnet guidance.
#1 Best Overall
- 【Car Magnet Set】Set of 2 magnetic signs for vehicles measuring 24 x 12 inches, 40 mil thick, blank car magnets with reinforced magnets that fit securely on the car, even at high speeds. No need to worry about being blown away on the highway
- 【Round Corner Design】Our blank car magnets are designed with rounded corners to enhance professionalism and ensure that the magnetic corners are not rolled up during high-speed driving. Always flatten the blank car magnets set - apply it directly to a clean, smooth Ferrous surface (does not work on aluminum, plastic, fiberglass, etc.)
- 【Cover Logos】Our magnetic sheet signs can easily help you cover the company logo on your car, easily protecting you when needed. Magnetic car signs can also be cut into the shape you want and affixed to surfaces that require protection, achieving an elegant and polished appearance. Similarly, magnetic stickers can serve as effective blocking tools to prevent scratches and dents
- 【Customization】The white car magnets are made of inkjet printable vinyl sheets and can be used with solvents, eco-friendly solvents, latex inks (or permanent markings) to create a perfect customized logo set or personalized car magnets and decals. With our customizable car signs, you will be able to use a new way to promote your brand or business
- 【Reusable Use】The flexible magnetic sheets are super convenient to use, just flatten and align with the metal surface. The flexible surface achieves maximum adhesion and can firmly adhere even in wind and rain. Magnetic car stickers are easy to use and disassemble, do not damage the vehicle paint, and can be easily transferred to any vehicle you drive, and can be reused
How to check the exact spot
- Choose the precise location. Check the panel where the sign will actually sit; do not assume another area of the vehicle is equivalent.
- Try a household magnet there. If it does not attract to the panel, do not use a magnetic sign at that location. Hadrus also advises testing the full application surface.
- Check the fit. Confirm that the entire sign can sit flat without spanning curves, bumps, or molding.
- Inspect contact before driving. The sign should lie flush, with no trapped air pockets. Follow the directions supplied with your specific sign.
A household magnet is a practical compatibility screen, not a guarantee that a particular sign will remain secure in every operating condition. Follow the sign maker’s instructions and inspect the installed sign.
Apply and maintain the sign carefully
Clean both the vehicle panel and the back of the magnet before use, and keep the surfaces clean and dry. Hadrus advises applying magnets warm, pressing out air pockets, removing and inspecting and cleaning them regularly, and storing them flat. Signs.com also recommends frequent removal and cleaning, and says to remove car magnets before a mechanical car wash or power washing. Follow the instructions for your specific product; see Hadrus and Signs.com.
Rank #2
- Used as personalized magnets, customized car magnets and decals to print advertisement you want or repeated scribbling.
- Made of high quality materials, which means durable to stand up to years of use.
- Show your personality and sense of humor with this funny political magnetic sticker.
- This car magnet can easily cover your company logo.
- This 12x18 inch magnetic car sticker can be used to decorate your car, SUV, truck, boats, refrigerator, laptops, etc., any surface of iron, and also prevent scratches and dents.
What if the panel will not hold a magnet?
Do not assume that a stronger car magnet will solve a material mismatch. If the intended panel is incompatible or cannot provide full, flat contact, do not use a magnetic sign there. An adhesive vehicle decal or vinyl graphic may be a different product category to consider, but check its maker’s guidance for your vehicle’s finish, installation, and removal before choosing it.
Quick Recap
Best Value
- 【Car Magnet Set】Set of 2 magnetic signs for vehicles measuring 24 x 17 inches, 30 mil thick, blank car magnets with reinforced magnets that fit securely on the car, even at high speeds. No need to worry about being blown away on the highway
- 【Round Corner Design】Our blank car magnets are designed with rounded corners to enhance professionalism and ensure that the magnetic corners are not rolled up during high-speed driving. Always flatten the blank car magnets set - apply it directly to a clean, smooth Ferrous surface (does not work on aluminum, plastic, fiberglass, etc.)
- 【Cover Logos】Our magnetic sheet signs can easily help you cover the company logo on your car, easily protecting you when needed. Magnetic car signs can also be cut into the shape you want and affixed to surfaces that require protection, achieving an elegant and polished appearance. Similarly, magnetic stickers can serve as effective blocking tools to prevent scratches and dents
- 【Customization】The white car magnets are made of inkjet printable vinyl sheets and can be used with solvents, eco-friendly solvents, latex inks (or permanent markings) to create a perfect customized logo set or personalized car magnets and decals. With our customizable car signs, you will be able to use a new way to promote your brand or business
- 【Reusable Use】The flexible magnetic sheets are super convenient to use, just flatten and align with the metal surface. The flexible surface achieves maximum adhesion and can firmly adhere even in wind and rain. Magnetic car stickers are easy to use and disassemble, do not damage the vehicle paint, and can be easily transferred to any vehicle you drive, and can be reused Report an issue with this product or seller
Rank #4
- DURABLE AND RELIABLE: Our 40 mil thick vehicle car magnets have superior quality material with embedded magnetic ferrite particles, providing unparalleled durability compared to thinner 30 mil sheets offered by competitors. The sheets have 0.75" rounded corners, and they stick firmly to most steel or ferrous metal surfaces.
- EASY TO USE & REUSABLE: The magnets conform to curved surfaces and can be easily removed and reused without leaving any residue. Even at highway speeds, they stay on securely. Cleaning the vehicle sign with warm water and mild detergent frequently ensures optimal results and durability. Wipe surface clean and dry before reapplying.
- VERSATILE USAGE: Ideal for cars and trucks, these magnetic sheets can be used to cover company logos, prevent dents and scratches, or advertise your business. They can also be used for inventory counts, defective materials, gas cylinder status signs, or other temporary messages. You can print, write, paint, or cut patterns to suit your requirements.
- PACK CONTENTS: Each pack includes two 18x24 inch blank magnetic sheets, giving you plenty of space to create custom designs and messages for your vehicle or business.
Rank #3
- Custom Magnets for Cars — Spread the word about your business with your very own vehicle magnets! These custom magnetic signs are a great promotional tool for your business, as you will be able to show your a graphic showcasing your company and other information to everyone you drive by! This listing is for one custom magnet.
- High Quality Magnetic Signs for Vehicles — Our custom car magnets for businesses feature a high quality print with matte finish and are flexible and durable for adverse weather. They feature round corners so that the magnets do not fly off while driving. The magnets are a thick 30 Mil and magnetized 12 poles per inch. They will strongly attach to ferromagnetic metal surfaces, so please make sure that the entire surface attracts magnets and is flat. Not all vehicle surfaces are ferromagnetic. The magnets must be removed and cleaned daily.
- A Great Promotional Message — These custom magnetic signs for vehicles will let everyone know about your business. Whether you do landscaping, plumbing, construction, roofing, real estate, offer handyman services, etc., everyone you drive by will get to know about you and your message. You can also add text. The customized door magnets are easily applicable and removable, making them a great branding option that can be applied temporarily!
- How to Customize — By clicking on "Customize Now" you can access the customization options available. You can add your own design, or choose from our pre-made business templates and add your text. To ensure a good print quality, please make sure the image that is uploaded is a digital version of the design in a high-quality, 300 DPI file. Feel free to let us know if you have any questions about the final result or how to personalize your customizable magnets.
- We conduct a quality check on every single custom car magnet we make. All of our custom magnetic car signs are printed in the United States and cut with slightly rounded corners.
Compatibility checklist
- Material: The exact panel attracts a magnet and is compatible with the sign maker’s product.
- Shape: The full sign fits on a smooth, flat area without curves, bumps, or molding interfering.
- Contact: Both surfaces are clean and dry, and the sign lies flush without air pockets.
- Care: You can remove the sign regularly to inspect and clean it, and take it off before washing the vehicle.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
