When I worked at Firestone I used to see this all the time. Its actually what turned me off to chrome rims. It is deff fixable tho and very easy if you have the right tools. Basically what is causing the air to leak is the chrome bubbling on the inner lip of the rim, where the rubber from the tire meets the wheel. What you want to do is grind that chrome off with some sandpaper until its nice and smooth. If your doing this by hand it might take a while but with the tool it takes me just a minute or two. Then you take some "bead sealer" which is like tire glue and put it on the metal u just sanded and on the part of the tire that meets the wheel to for the "bead". That's it. Just inflate the tire again and your good to go. I never ever had any comebacks. Hope this helped!