That looks so good! I hope to get mine looking fresh like yours.. So your tire is flat and not taking in air? A couple things I did to fix mine was take a valve tool and unscrew the center. Sometimes dirt or rust can get jammed in it. So I cleaned mine out. You can use a small screwdriver too. Another way might just be that it needs a new valve or valve core! Most tire shops I bet would do it for free or cheap!