2001 Sebring Sedan chrome wheels

[cats]

I have a 2001 Sebring Sedan LXi with 16x 6.5 Aluminum Wheels - Chrome - There is only 37000 miles on the car and for over a year I am having problems with rim leaks but only on whatever rims are on the front. I have had the tires balanced and rotated and within a week the front tire passenger side was totally flat - fine one evening and the next morning - no air - had to call AAA to change the tire. I have had the rims cleaned and a new seal put on and still the front tires leak. I have had this done at Goodyear and Sears. This time the tire was done 4 weeks ago and I have had to add as much as 6 pounds to it. I check the tires daily - visually and if it looks a bit low, tire guage - Yesterday morning the tire was fine but at 10 PM I was driving 50/mph on a state highway and the tire lost air quickly. It started to pull to the right and then just went soooo flat.
I find it interesting that just the rims on the front are affected. Can the weight of the car/engine just be too much for these rims?
Does anyone else have this problem? What was done about it? These are very expensive rims. Sometimes the tires will go low while driving and when I check them there is only 10 pounds of pressure - Tires have plenty of tread.
I would think this would be a serious safety issue - the dealer has agreed to look at all 4 wheels and no charge - just to look.

Help!