Danwolski

I have a good set of tires that are meant for the OEM Ap1 rims. I need to buy rims for them but Ap1 rim prices have gone up a lot for some reason. I was looking at them a few months ago and they were like 200 but now people are asking 350-500 and they are hard to find(in Chicago). So since the Ap1 rims are so expensive I was thinking of buying some cheap rims for this summer. I found some Elbrus rims for really cheap on tirerack. What size rims should I buy for the tires to fit? The tires sizes specifically are 225/50/16 and 205/55/16.
Right now im pretty low on cash so im looking for the cheapest solution.