Never seen this before... can't be good. What causes this? <p><IMG SRC="http://img51.imageshack.us/img51/2404/1004824medium1cn.jpg" BORDER="0"><br><IMG SRC="http://img296.imageshack.us/img296/939/1004825medium3bw.jpg" BORDER="0"><p>Since these Wintersport M3s only have 8000 miles on them, should Dunlop still cover it under warranty? They were purchased in Oct 04. They are V rated, and I've never gone over 145 (rarely go above 130).<br> <br>Wanted to wait until it warmed up here before I put my KDW2s back on, but I'm thinking I'll do that tomorrow. Don't know what is worse, summer tires in 30-40 degree weather with no snow, or a sidewall bubble.<p>thoughts?