I'm not sure whether your tire was recently mounted , or whether the leak suddenly appeared in a tire that has been mounted for a while. A sudden rim leak from a tire that's been mounted for a while may indicate a bent rim, rotted tire or broken bead, low tire pressure, or overloading. I assume you've used a bubble solution to positively locate the leaks. The leaks that I've had between the tire bead and the rim have been slow leaks that required an air addition about every week or two. They have all been caused by sloppy mounting procedures . I've found that a careful inspection of the rim and tire bead surfaces before mounting, and a cleaning of the surfaces, usually eliminates leaks. I also often use a bead sealing liquid . Since I bought my own tire mounting machine, I can take the time to do the job carefully, and eliminate the quick and dirty procedures done at most tire stores. My bubble balancer does a good job about 90% of the time, but occasionally a tire and rim need a dynamic balancing.
