wheels are wobbly after installing spacers

Originally Posted by jeezzuss

so the other day i installed spacers on my car. i put 20s in the front and 15s plus 8mm in the back. i bought my spacers used and it doesnt have the lip on the spacers that the ichibas and other spacers have. when i installed it with my friend i noticed the rotors have a small screw that sticks out but it came off so i took it off. after installing everything and double checking things. i went for a drive and the car started wobblying. can anyone help me out here? idk what to do. would adding the 8mm spacer in the back with the 15mm bolt on have a problem?