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Hey all, looking to get new wheels and tires for the Jeep. I've got a 2 inch Rough Country lift in the box, plus new monroe rear shocks and struts ( only 44K miles, but figure why not).

My question, even after reading the FAQ on size and backspacing, is pretty easy. I think I can do a 17x7.5 or 17x7.8 wheel and use 255/70r/17's, but I'm having trouble visualizing the offset. I see some wheels with 25mm or more.

Does the larger the offset number mean the more the wheel is pushed OUT to the curb side? I'm just not sure if I need to order wheel spacers or not, because I'm all new to this.

Thanks in advance, and here's the wheel I was considering

http://www.tirerack.com/wheels/WheelCloseUpServlet?target=runWheelSearch&initialPartNumber=3967873PC25PVD&wheelMake=Granite Alloy&wheelModel=GV6&wheelFinish=Bright PVD&showRear=no&autoMake=Jeep&autoModel=Commander&autoYear=2007&autoModClar=
 
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See if this helps... You need to be more concerned with backspace than offset. Offset is the measurement from center of the wheel in +/- numbers to the mounting surface. Backspace is the measurement from the mounting surface of the wheel to the rear lip of the wheel. The wider the wheel the more the offset can change to achieve the same backspace. If I remember correctly the factory backspacing is 6.5" You really need to look at a 4.5-5" backspacing which would push the wheels out 1.5-2". The offset to achieve that backspace would depend on the width of the wheel since it is measured from the middle.
 

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I remember too the stock backspacing is 6.5" and I would stick to that as possible to avoid stress on other parts, especially if you decide for more lift soon. Nice choice of wheels, or some Ion wheels should fit and compliment the looks too!
 
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