Just got this installed yesterday. Thanks Tirerack for quick shipping! Coming from Goodyear Eagle GT in 235/40/18 with 21k miles, these Kumho's are a little quieter and seems to be softer riding (softer sidewall maybe?)
Can't really speak to their handling as I've only put about 50 miles on it.
One thing I noticed is the lack of a rim guard on the Kumho. On the Goodyear, there is a thick piece of hard rubber sticking out near where the tire meets the rim, this is suppose to protect the rim from curb damage. and it has done a pretty good job over the last 3 years keeping my wheels in good shape. With the kumho, it doesn't have that rubber rim guard, so the rim now stick out a little where it meets the rubber. I'm going to have to be super careful when I park now, or expect lots of scratches to the 18 rims.
Overall, on the first day, they aren't too different from the Goodyear Eagle Gt's. I wasn't displeased with the goodyear, and would have continued to use them if it weren't for a nail near the sidewall. They lasted me 21k and still had around 4/32 to 5/32 tread left, so I expected to get around 30k miles out of that set.
Hope the Kumho's will last 30k, they do feel a bit softer (ride wise) so maybe its a softer rubber compound.