I also pulled this off of another thread but these seem to be the 2 most popular tires to run on this wheel(or may be the only options, not sure)
Look for M&H Racemasters 185/50/18 radial tires, or Mickey Thompson 26X6.00R18LT .
Currently for sale: $26,500
2011 Camaro 2 SS/RS L99-462 RWHP / 424 RWTQ for now
Lucky's Speed & Performance