i have a 2006 crd and was wondering if you can run 15x8 rims or do i have to stick with 16x8 and what is our bolt pattern and backspacing for a 31x10.50 or 245 70s

I have 245/70/16 on my CRD on stock Wheels, and no lift No rubbing at all. As for your question yes you can run 15x8 wheels on the CRD. I think the back spacing is 5 inch

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LOST #-169388
'79 CJ-5
32x11.50x15
304 V8

'08 Chevorlet HHR
Victory Red
Stock for now.

I don't see why you couldn't run 15" rims. Bolt pattern is 5x4.5" (5-114.3mm).

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2006 Jeep Liberty Limited CRD w/275000 miles

I just wasn't sure if the rim would clear the caliper or what

Oh... That's a good question, and I have no idea. But, why don't you measure against the current rim for clearance? Or, maybe Tirerack.com or another wheel dealer could help. All you need is 1/2"...there's probably a good chance it'll fit.

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2006 Jeep Liberty Limited CRD w/275000 miles

Check the forum on tires and wheels, some 15in wheels fit, some don't. In general it looks like steel 15 inches clear the disk brakes ok, but most alloy's won't

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2005 CRD "Ol' Blue"
Red Ryder carbine-action, two hundred shot range model air rifle with a compass in the stock and this thing which tells time.
My build page- RL Komodo Rear and TJM Front Bumper, armored, lifted, JBA Steel D30, 4.10s and ARB air lockers.