We got a set of these in last week and I took a few minutes to test-fit them on our shop Focus RS. They fit over the brakes will MILES of clearance. They are +38, which is a smidge lower offset than I'd like, but at least you know you're not going to run your tire into the strut.
These KB-R will fit just the same as the 18x9.5" +38 Rota Grids I had on our car for a while (with 255/40R18). I didn't put any tires on the KB-R's, so here are a couple of photos of the same size/offset Grids on the car, with tires, for the sake of seeing what the fitment is like:
This is what the KB-R looks like in flat black:
Weight on these is 22.3 pounds a wheel.
Rota KB-R -- click me.
Click the link for more details or to order.