I bought a douglas tire from wal-mart on Jan 27, 2011. Today is Feb. 21, 2011. The sidewall of the tire completely separated about an hour ago while my son was driving it on the highway.We are lucky he wasn't hurt. Well needless to say wal mart will not replace the tire. I believe it had to be a defect in the tire since it has been less than a month since I purchased it and the way it came apart.