I'm afraid I know exactly what's wrong with your tire pressure, having just gone through the same thing with my 2007. I would venture to guess that you have the more expensive chrome spoked 17X7.5 rims. They have absolutely no corrosion protection, and they are leaking around the beads. You can try having the tire dealer glue the beads on - that can help if they're not flaking too badly. I actually had one rim corroded to the point where it wouldn't hold air anymore at all - it was leaking right through the rim and through the side. I just coughed up $1700 for four new standard rims, which are corrosion protected. Wish I had better news. I am still fighting with Lincoln, who say that this is not common, and so won't pay for the repair.
Friday, April 12th, 2013 AT 12:08 PM