Enjoy your family trip! Unfortunately, it’s usually not a good idea to try to flat tow a BMW X3. While some customers do claim to have successfully flat towed their BMW 3 Series, BMWs aren’t made for towing and can experience some problems with their iDrive feature after such an activity.
If you want to bring your BMW with you, you could opt for towing your car on a trailer instead. That way, your vehicle’s wheels won’t be on the ground. This is a little more difficult to set up than a traditional flat tow, but it will keep your car better protected.