Tires and Wheels problem
2008 Lincoln MKZ 6 cyl All Wheel Drive Automatic 50,000 miles
I have a 2008 Lincoln MKZ with 50k miles on it. I have had it for 19 months. Ever since I purchased this car, I have had a problem with low tire pressure. At first the Low Tire Pressure light would come on every week or two. I also had a couple plugs put in due to nails. It had Michelin tires on it. Over this past summer, I had to start adding air once or twice a week. I took it to the dealer many times only for them to tell me the tread was ok and they could not find a hole where the air could be escaping. I finally got tired and bought 4 new tires this past weekend on Saturday 10/23). Everything was fine till this morning (Monday 10/25), the Low Tire Pressure light came on again! I called Merchants Tire (who installed the new tires) and they said it could be because the temperatures dipped low last night and that it should resolve itself when it warms up today. Needless to say, it did not. Could you pleas tell me what could possibly be wrong and what my next steps should be? Should I take this up with the dealership? Could there be a larger problem that is causing this to happen that might be a dealership/warranty issue? Thanks for your help!
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.