 Run-flat tires installed on BMW's 2011 5-series vehicles are less than optimal - creating a high level of concern for consumer safety.I purchased my brand new BMW on September 1, 2011.On October 3, 2011, I returned to the dealership for installation of wheel locks. The service tech identified a bubble in the wall of the front passenger tire.I replaced the damaged tire at the cost of $550+ dollars (including labor).During a more recent, unrelated service appointment, (February, 2012), bubbles were identified in both front tires.This would account for the second replacement of the front passenger tire within 4 months and my vehicle has less than 6,000 miles.