My original tires, which now have 60,000 miles on them are Bridgestone AT's or Ht's and they have always had cupping and noise issues. But guess what? They always stayed round and I have had zero vibration issues. Plus they still have pretty good tread for 60,000 miles! Looking at buying some new tires for my 2004 Silverado 4WD with the Z71 package. Most of my driving is on road but I have to deal with Michigan winters. Has anybody out there had any experience with the Bridgestone DUELER A/T REVO 2 Tires?