After upgrading my clincher on my fitness bike to the Conti 5K I was sold. I definitely felt faster, and the ride felt smoother. So I was a little disappointed when I upgraded to 5K TLs on my tubeless setup on my road bike. Not because of performance, the gain was definitely there, but rather that the front tire has a pronounced wobble. The wheel is true, and the LBS even took the tire off, inverted it and felt for imperfections or tears, and couldn't find one. They re-mounted it, and the wobble is still there. Currently they have put in a claim with Continental (submitted the manufacture date on the tire) and hopefully Conti will see fit to replace it. I noticed the wobble within the first two days of normal riding. It might have been there on installation but honestly I didn't look carefully for it when it was installed.