Larger Magnets blow off of your car

Okay, so I'm a big fan of Sticker Mule stickers, but their magnets are not great. I live in an area where there are high winds, and the magnets I ordered blow off of the car. I've experimented with multiple vehicles on different parts of the car. They blow right off the car. Driving down the road they have blown off on multiple occasions. I can confidently say their product is not great as the vinyl print on the magnets delaminated. If you are thinking you want a large magnet, I would try doing some sort of decal option instead.