You have a flat tire, what to do? First, it is important to make sure you are safe, pull over at a gas station or a safe place. If you have someone in your vehicle, have them call someone for help. Next, you should think about the spare tire you have. Is it full? If not, go get some air, unless you want to call someone to help you. If you have a full spare tire, go ahead and change it.
https://tiresdaily.com/best-tires-for-subaru-forester/