Brakes, not breaks.
Test fit. If they clear, go to the hardware store and pick up a bunch of large nuts and washers to space the wheel out. You can get away with putting them on 3 points on the wheel. Get the car off the ground, bolt the wheel up with different combinations of washers and and nuts until you get proper clearances. Measure the thickness.
Looking to buy a base E30 3'er coupe in or near CT. PM me if you're selling.