Kumho Tires are great tires. Good wet/dry weather traction, lasted for a year and a half on my hard-driven rig, and they are not too expensive.
I try not to be too harsh or get involved in these sort of posts, but you are an ignorant idiot! You think Kumho 712's are decent tires and then say that Rotas aren't worthy because they don't cost enough. You have no clue. Tires are the single most important performance piece on the car, and you're willing to skimp on them, but not wheels. It's scary how backward you're thinking is and how blinded you are by your own idiocy.