The Park Ave is not made to have 22" rims, The gauges will be inaccurate for one thing, and there are clearance issues. The easiest way to put them in the back would be taking a saws-all to the trunk and quarter panels, fiberglassing in the trunk. The front is the hard part; there are major modifications that would need to be made, and it would end up looking bad and riding even worse. I would settle for smaller rims with low profile tires.
yes o no
no the highest you can go is 22" wit 35 profile
yes
Yes as long as you run on the rims
4" lifts.
yes.
No. 22" rims will rub and scrub. You will need to do downsize a bit there.
yes i have some on mineype your answer here...
YES THEY WILL. HOWEVER THE TIRES NEEDED TO PROPERLY FIT WITHOUT RUBBING WILL BE THE LOWEST OF THE LOW PROFILE. THE SIZE TIRE WILL BE 225/30/20
31/10.50 without rubbing
Not without modification
You have to buy the rims from GM and the biggest size is 22'' rims more then that you will damage your Avalanches' chassis.