I own a 2015 Toyota Camry. Any time I drive it over about 40 mph, it makes a

Have this noise evaluated by an automotive professional technician. This could be a concern with your wheel bearing, for example, or another front suspension or steering component. Don't let it go, be sure to have it checked, as failure may occur preventing operation of your vehicle.

Had the same problem on an earlier year model Camry - the ambient temperature sensor located behind the grill had become dislodged from it’s mounting and hanging down with the wiring still attached - at about 40 mph I would hear this rattling/bumping noise.. I ‘finally’ found that rather odd wind related problem and easily fixed it. Now this is in no way related to your particular concern but just to let you know just how difficult it is going to be for anyone to locate this as the vehicle must be in motion before noise occurs.. Some repair facilities will have a device (chassis ear) that will help locate noises from suspension and some drivetrain components - this is just one option to consider. Good luck!