Magnetic vehicle signs only stick to steel surfaces. Some newer vehicles use aluminum, plastic, or fiberglass panels which magnets will not attach to.
Magnetic signs only stick to steel vehicle panels. Aluminum, plastic, and fiberglass panels are not magnetic.
How to test:
- Take a refrigerator magnet
- Place it on your vehicle door (test the exact spot where you want the sign)
- If it sticks firmly, magnetic signs will work
Why Magnets Don't Stick to Some Vehicles
Many modern vehicles include lightweight materials to improve fuel efficiency. Aluminum, plastic, and fiberglass panels are not magnetic, which prevents magnetic signs from attaching properly.
Tip: Even on the same vehicle, different panels can be different materials. A door may be steel while a fender, tailgate, or bedside is aluminum or composite.
Vehicle Compatibility Guide
| Vehicle Type | Magnets Work? | Notes |
|---|---|---|
| Sedans | Yes | Most doors are steel |
| Utility Vans | Usually | Test door panels first |
| Pickup Trucks | Sometimes | Some newer models use aluminum panels |
| Service Bodies | Often No | Many are fiberglass or aluminum |
| RVs and Trailers | Often No | Siding is commonly fiberglass or aluminum |
Recommended Magnetic Sign Sizes
| Vehicle | Recommended Size |
|---|---|
| Small Cars | 18 x 12 |
| Sedans | 24 x 12 |
| Pickup Trucks | 24 x 18 |
| Vans | 36 x 18 |
Ready to Order?
Shop Custom Magnetic SignsMagnetic signs require steel panels. If your vehicle doors are aluminum, plastic, or fiberglass, magnets will not stick. If you are not sure, contact us and we will help you choose the best option.
Will Magnetic Signs Stick to My Specific Vehicle?
People often search by make and model, especially trucks and SUVs. Panels can vary by year, trim, and even location on the vehicle, so the most reliable answer is always the household magnet test on the exact spot where the sign will go.
Quick answers to common vehicle questions
Will magnetic signs stick to a Ford F-150?
Some F-150 trucks use aluminum body panels, which are not magnetic. Test your door panel with a household magnet before ordering.
Will magnetic signs stick to SUVs or Jeeps?
Many SUVs use mixed materials. Test the exact panel where you want the sign. If the magnet does not stick firmly, magnetic signs will not work there.
Will magnetic signs stick to aluminum doors?
No. Aluminum is not magnetic. Magnetic signs require steel panels.
Why does my magnet stick in one spot but not another?
Different panels can be different materials. For example, a steel door with an aluminum fender or tailgate. Always test the exact spot where the sign will go.
Do magnetic signs damage paint?
When used properly, magnetic signs are safe. Keep the surface clean and remove the magnet occasionally to prevent moisture or dirt from being trapped underneath.
What if my vehicle is aluminum or fiberglass?
Magnetic signs require steel. If your vehicle is aluminum, plastic, or fiberglass, reach out and we will help you choose the best alternative. Call 812-936-7446 or use the contact page.
