Yes; however, you will have to reduce your max ratio of tire sidewall accordingly. You won't be able to use as "tall" a tire with a "taller" rim, which is typically not a problem in this app, since people generally lean toward shorter sidewalls in these apps.
No. I have a 2009 Malibu and the largest you can go with the rim size is 20" (but even then it is pushing it)
probably a 15x7 inch rim.
Will as 20 inch after market rim that's on a Chevy fit my Titan
14 inch
Yes.
+31
Yes
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22 inch rim with a 245/35/r22 tire
Your 2008 Malibu can handle 18 inch rims. Rims that are larger than 18 inches will require modifications to the suspension.
Not without tubbing the car.
will 24" fit my 87 caprice