Bought the i20 from new with Kumho tyres. After 23500 miles, mostly dual carriage way and motorway, they still had 2 - 3 mm of tread left. Generally I found them very good, even in the snow! The only negative comment was the road noise. Running my second i20 now, fitted with Hankook tyres, road noise is definately reduced. Would I buy them again? Probably.
Bought a Kia Picanto 2014 brand new, came with Kumho tires. Since new, the tires slip a lot when youre pushing on your throttle, even in low revs. My city has a lot of hills and sloped stop lights, and the traction is not very good when starting to accelerate uphill. Everytime you start moving they will slip, specially if the floor is wet. However, they do no slip for a lot of time, 1 second aftewards it has traction again. But it is annoying that every time you try to start moving, it happens. Does a good job on handling, but sometimes you feel that youre pushing too hard on the tires, about to loose control and actually youre just going about 50km/h on a curve, slightly oversteering I guess. Noise is quite hard, and comfort isnt too good, specially when driving on bumpy roads. I have driven in dirt, pavement and many country side roads with good results afterall. The thing that gets my nerve the most about these tires is the weardown. 22 000 km for these stock tires. Really sucks, I believe that it is because of all that slipping when trying to start from a traffic light. Also, got a flat tire after 2 weeks of using them, not a very big sharp object pierced through one of the tires. Im impressed that some people say they got 60 thousand km from them. very low-average tire in my opinion...
its a midrange tire.. just for family car.. not bad!