As of now, there has nothing that I’ve been concerned of. The tires have been durable considering the lack of streeks; no easy punctures or rips from high pressure cycling; was able to roll through grass, gravel, bumpy roads, and has provided more stability and less recoil on those roads. The tires look aesthetically pleasing to most people I’ve asked about my bike as well as leaving with slight jaw dropping moments. I hope Kenda continues making great quality tires for cyclists - commuters, mountaineers, racers, and tourists alike to provide a service with great reputation and reliability.