DodgeDriver

I am posting to these newsgroups because of the vast expertise available.
Thank you for indulging me.

On April 30, 2007, I purchased a 2004 KIA Optima that had been used by the
dealer as a loaner. The car had about 19,000 miles on it when purchased by
me. The car had been placed in Service by the dealer on June 30, 2005.
When purchased by me, there was a little over 3 years and 40, 000 miles left
on the warranty. I have noticed on several occassions the car appeared to
be leaning to the left (when viewed from the rear) while parked in my
driveway. Yesterday, I took a few measurements in the driveway and the car
leans about 1/2" to the left. Measurements were taken at a point near the
left front, left rear, right front and right rear. I moved the car into my
garage, on a level floor, re-measured, and confirmed my original
measurements. I will be taking this up with the dealer but would like any
ideas as to what may have caused this problem and how to resolve it.

Thanks for any information.