Automotive Magnets

Choose a magnet size that is large enough to display your message and be visible at driving distances (commonly 6x9 to 12x18 inches); thicker magnets (2-30 mils) adhere better and resist lifting, while very thin magnets may peel at higher speeds or on curved surfaces

Look for flexible magnetic sheeting with a UV-resistant printed vinyl or laminated film and corrosion-resistant backing; these materials help resist fading, cracking, and edge corrosion from sun, rain, and road grime

When used correctly on clean, dry, smooth paint, temporary automotive magnets are generally safe, but avoid placing them on chipped or very soft finishes, and periodically remove and clean both the magnet and vehicle surface to prevent trapped dirt from scratching the paint

Clean and dry both surfaces before applying, press firmly to eliminate air gaps, remove and reposition every few weeks to check for moisture or debris, and store magnets flat in a cool, dry place when not in use

Consider heavier-gauge magnets and larger contact area for better holding strength; magnets with stronger magnetic pull and secure placement on flat panels are less likely to lift at higher highway speeds, but always follow manufacturer guidance and test at safe speeds

Custom printed magnets vary by size, quantity, print quality, and finishes; budget options typically start under $50 for simple single magnets, while higher-volume or laminated full-color prints increase cost and may take longer for production and shipping

Typical flexible vehicle magnets are not strong enough to affect modern vehicle electronics or sensors; however, avoid placing very strong rare-earth magnets near sensitive devices or navigation sensors as a precaution