I took off Avon ZV5s and replaced with KumhoKU31. The ride is much better and less crashy, but the grip is hopeless. The sidewalls seem far too soft, and the front seems to tuck under which then unsettles the rear. They also squeak much more than the ZV5, which means they are losing grip. However, the soft sidewalls do make sensible driving much more comfy. Just don't try to corner fast. Bridgestone Potenza are the best tyre I've had on, but I can't afford them. The ZV5 were a cheaper option last year, but this year I bought the Kumho because they seemed to have good write-ups, and I couldn't find Ultracs. I won't buy them again, and should have stayed with the ZV5.