I have the factory aluminum alloy wheels and had about 1/8 to a 1/16 inch of clearance on mine. The back ones slid right over with no problem and front ones I had to use a small pipe over the studs to work the balancer on by light tapping because they were tight that way, but clearance was excellent.
As mentioned earler, Casting of the caliper
I must have gotten lucky, I don't know. I just know I did not have any trouble getting them on.
As mentioned earler, Casting of the caliper

I must have gotten lucky, I don't know. I just know I did not have any trouble getting them on.