Not without an adaptor.
You will have no problem with that switch over.
No.
The answer is yes. They have the same bolt pattern which is 5x4.5"....so practically you can interchange rims between Cherokees from 1986 or '87 with newer Cherokee's and grand Cherokee's until they changed the body style(1999 I think)
yes it will
'84-'06 Wrangler rims have the same bolt pattern.
Yes they should interchange without a problem.
5 X 4.5 the most common pattern of all types of makes and models
not if you have the stock rims
Yes
NO! they have different bolt spacing
yes
20" rims or 22" rims will easily fit your car just depends on what you like better.