[FrogXA]

I've got 275/35/19 Kumho's with Kings SSL on the back of my XR8 and had to grind a fair bit out where the metal guard meets the black plastic inner liner on the back of the wheel arch. I ended up parking the car diagonally on a steep driveway till I heard it touch, then I got out and marked where it hit with a felt pen. I used a thin cut-off wheel on a 4" grinder and cut a wedge out about 5mm wide on one edge and about 50mm long then neatened it up with a die grinder and painted the exposed metal. The die grinder worked well on the plastic inner guard as well.

You shouldn't have too much to grind away though as your tyres are a bit smaller than mine.