Although I still see them on the Kumho site, nobody seems to sell them anymore, not even Discount Tire Direct.

 

I heard a replacement was coming out, but I thought it would be more like next year. I've got a new set just mounted last week. I purchased them from Tire Rack a few months ago.

If you can't find a set, take a look at the new Azenis RT-615 (Vulcan Tire or Discount Tire). They offer 245/40 which will fit front and rear. I'll be trying a set as soon as I burn my MXs off.

 

I just bought a set for my mustang last month from Tire Rack.

 

I just got a new rear set of Kumho MX's from Discount Tire Direct (Americas Tire Co) up north of you in Santa Rosa. They took a week to get here, but I got em, at the online price ($199 ea)