Only 525 miles so far on these Kumho Ecsta 4X RU22... but my initial impressions are very very positive! Steering response and traction are extremely important to me. That is why I had a dedicated summer tire (Bridgestone Potenza RE760 Sport) on my car prior to these Kumhos. The Bridgestones only lasted 21, 500 miles, so I decided to try these Kumho all season performence tires due to the reviews, tests, tread wear warranty, and price. Wow! The Kumhos are much quieter, ride better, and have very simular great steering response and traction!! Very very impressed so far!