A few days ago,I removed all four wheels,and checked the lugnut torque on my wheel adapters.Checked o.k...All clicked at 135 ft lbs.I reinstalled the wheels,the last one was the driver side rear,and noticed the valve stem sleeve cracked.I searched this ,and it is a known problem.I called my dealer,and explained the problem,and they said to bring it in for repair.I actually thought it would be like fighting a ninja with 4 arms and 4 legs,but there response surprised me!!!!!