11"
The best tire size is the factory size. It is listed on a label on the driver side door jamb.
The best size is the size it was built with, which is listed on a label on the driver side door jamb.
Check the sticker on the drivers door jamb, it will list the size it was built with. That is the size you should buy.
The lug nut (stud) size I have found listed are for 2002 and up Jeep Liberty-1/2x20
TEN
The 2006 Jeep Wrangler has a 2.4 L base engine size.
Yes
13mm
The 2006 Jeep Wrangler has an inline 4 engine.
The 2006 Jeep Grand-Cherokee has a 3.7 L base engine size.
The 2006 Jeep Grand-Cherokee has a V6 engine.