I got 2 set of 20inch i3s rims (jet black 20x6 and 20x5.5) and 2 i3, a 19 i3 and an 18 i3s. To make it easier for the future, can I put the 4 rear wheels in one car (the i3s) and all the 4 front wheels in the other? I will be using 195-55R20 in all. I just want to be able to have more options on tires and to rotate the 4 wheels. Opinions?