From the WK parts manual, the lug nut size is .50x20 thread (diameter and pitch) and I believe 3/4" hex. I'm sure about everything except the 3/4".
The 2007 Jeep Grand-Cherokee has a V6 engine.
The 2007 Jeep Grand-Cherokee has a 3.7 L base engine size.
20 gallons
The 2010 Jeep Grand-Cherokee has a V6 engine.
The 2006 Jeep Grand-Cherokee has a V6 engine.
The 2013 Jeep Grand-Cherokee has a V6 engine.
The 2009 Jeep Grand-Cherokee has a V6 engine.
The 2012 Jeep Grand-Cherokee has a V6 engine.
The 2014 Jeep Grand-Cherokee has a V6 engine.
The 2011 Jeep Grand-Cherokee has a V6 engine.
The 2011 Jeep Grand-Cherokee has a 3.6 L base engine size.
The 2012 Jeep Grand-Cherokee has a 3.6 L base engine size.