If the grand cherokee is a 93-98 yes... otherwise, no you cannot. 99+ Grand cherokee "rims" or wheels are a 5x5 (5x127 mm) bolt pattern while the cherokee has 5x4.5 you need not consider the size...15" 16" 17" will generally fit on a grand cherokee. It's the bolt pattern you need to pay attention to.
yes it will
You will have no problem with that switch over.
Yes
Yes, they are both 5 on 5.
No.
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)
20" rims or 22" rims will easily fit your car just depends on what you like better.
Not without an adaptor.
not if you have the stock rims
Yes they should interchange without a problem.
NO! they have different bolt spacing