I bought my ZHP 5 years ago with 49K miles. When I got the car I had put new Michelins on all 4 corners. I only drive the car about 500 miles a year, and earlier this year I had the lower control arms, bushing, balljoints, struts installed, and an alignment. When I left Florida 6 weeks ago the front tires still looked new. The wife drove the car 750 miles to NC yesterday and the front tires are both worn on the outside edge. They have about 5/32's of tread where the inside has 7/32's. Could it be the age of the tires? I checked the mechanic receipts, all parts were OEM and they are all the corrects ones. The only thing I can think of is the tires are just old and wore out fast or the shop forgot to align it. Any other thoughts?