That's a hard question to answer since I am not sure what size rim you want to put on your Jimmy. I'm running the 16" IROC rims this summer and I put on the C4 Corvette rims on the son's blazer. I also have a set of 16" Firebird TA rims and Typhoon rims and all fit well without any problems. The Jimmy has a 2" drop in the front and 2.5 inch in the rear, my son and i are planing to drop his 3" and 3.5 in the rear to his blaze and both are 4X4.
Here is a link for you to get your rim's bolt pattern and you can go from there, oh as for the 16"Iroc and TA rims. You have to place the rear stamp rims on the front and the front stamped to the rear cause of our off set we have on the front axle. This will line up the wheel perfectly making your wheels look like it was custom fit to your Jimmy, you just can't rotate the wheels front to back.
