In our circle of family and friends, we have been very pleased with the Kumho Solus KR-21's. All whom have tried them have been satisfied with the ride quality, ease of balance, decent handling, and especially the price. If there is a size to fit your vehicle and high performance it's a must, these are a nice tire. These tires perform better than the price and speed rating suggust.
^I copy/pasted this^ from another thread. This is my reply to a BITOG brother looking for tires for his wifes vehicle.
I must add though, that the vehicles that we(our circle) are installing the KR-21's on are primarily used on family type vehicles such as MiniVans, SUV's, Sedans. And their a perfect example of what a family type vehicle tire should be. Not that there aren't better tire choices but, these KR-21's are a nice blend of the things that I mentioned above and a very nice surprise. Far exceeding our expetations for a "Standard Touring All-Season Tire".
The KR-21's aren't for everyone or every vehicle. I wouldn't put them on a BMW but, if you don't drive your BMW aggressively and want to drive it more like a family sedan, then the KR-21's are fine. Not sports care handling but, surprisingly good handling for it's tire type.