1098

I AM ORDERING LOWERING LINKS FOR MY 03 S600 AND JUST RECIEVED MY NEW AMG REPLICA WHEELS TO INSTALL. THEY ARE 20" 8.5 /9.5. I HAVE TO ORDER THESE TIRES SO I WOULD LIKE TO GET THE SIZE RIGHT THE FIRST TIME. WHAT SIZE WOULD I ORDER TO STRETCH THEM JUST A BIT?