What's the 2019 Mazda CX 5 lug nut size?

The 2019 Mazda CX5 has M12 X1.5 lug nuts that have a 13/16" hex. This means that You will need to use a 13/16" socket to remove and install them from the vehicle. When You are removing lug nuts from Your vehicle it is a good idea to use an impact wrench because they can break the torque on the lugs easier than using a standard ratchet. You should always use a socket or torque wrench to reinstall them though. Using an impact wrench to install lug nuts can strip them and the wheel studs out and that can cause expensive damage that will need to be replaced to get them working properly again.