The wheels are 18" Fikse the fronts are 9 inches and the rears are 10 1/2. I can't remember the offsets. All Fikse wheels are custom made so they can make you any offset you need.
Ah strange. They look bigger. I've got 18"x8" front and 20"x10" rear and they don't quite look the same. Must be some combination of yours being a little lower, the proportions of the rear diameter/width and the angle of the camera.
It looks really good. I like the Fikse wheels too. I was tempted to get Profil S wheels but they didn't make 20s. :[ I ended up with black Boze Shifter wheels instead.
That said, the wheels look great on your car.