Had 3 of my 19" tires replaced because they were "out of round" at 1200mi. Had the car serviced for a broken 3rd brake light (broken ground wire) and mentioned the car was vibrating at 60mph since delivery. Nothing bad, but knew it was a balancing issue which is a known delivery problem, and was planning on having them look at it the first time a major issue popped up. They found 3 of the 4 tires out of round and couldn't be rebalanced and replaced them. I'm wondering and a little worried how 3 of 4 tires are out of round and wondering if there's something inherent to the car that's causing this (aside from its weight)?