I can tell you when I had those wheels and 8mm spacers with 225/40-18 tires...it would just clear the well arch but rub the inner liners when pushing it hard through twisty's or if bumps were present through them. Normal or sane driving was never a problem. I was lowered to about 25" ground to arch tops. You being at stock height should be able to be safe at 10mm. You can poke the tread out with more of a spacer than that, but if you push the rubber out to the arch edges or beyond...I would suggest a rear ARB to keep it more level through the curves to avoid contact.
