I'd recommend a site such as JeepsUnlimited.com for more info about doing aftermarket things to your Jeep. Theres a ton of forum and tech info there that will help you make determinations as to how stupid you really want to get in adding lift or lowering. Anything bad idea you can come up with has already probably been thought of and tried and posted about on a site like that and that would be your best source of info.
Tirerack.com is a great resource for learning about all the intricasies of tire/wheel size and offers a wide choice of tires/wheels to pick and choose from.
Goodluck in making your Jeep stand tall !!!
16x7
The 2013 Jeep Grand-Cherokee has rear wheel drive.
The 2004 Jeep Grand-Cherokee has a 8 ft. 9.9 in. (105.9 in.) wheel base.
The 2001 Jeep Grand-Cherokee has a 8 ft. 9.9 in. (105.9 in.) wheel base.
The 2007 Jeep Grand-Cherokee has a 9 ft. 1.5 in. (109.5 in.) wheel base.
It is 175 ft lbs for the front wheel bearing of a grand cherokee
A Grand Cherokee is either rear wheel drive or four wheel/all wheel drive.
The 2014 Jeep Grand-Cherokee has rear wheel drive.
The 2004 Jeep Grand-Cherokee has rear wheel drive.
The 2009 Jeep Grand-Cherokee has rear wheel drive.
The 2013 Jeep Grand-Cherokee has rear wheel drive.
The 2008 Jeep Grand-Cherokee has rear wheel drive.
The 2006 Jeep Grand-Cherokee has rear wheel drive.
The 2003 Jeep Grand-Cherokee has rear wheel drive.
The 2011 Jeep Grand-Cherokee has rear wheel drive.
The 2005 Jeep Grand-Cherokee has rear wheel drive.
The 2007 Jeep Grand-Cherokee has rear wheel drive.
The 2010 Jeep Grand-Cherokee has rear wheel drive.