We'll I just bought and mounted the American 140/80-18 Teraflex II and my buddy bought the 150/90-18 Teraflex II China version. We are both riding 2000 street legal XR650R's. Were going to take pictures of both tires once they are mounted on the bikes brand new and we'll give occasional updates on the wear comparison between the American and Chinese tire. I've read alot of hear-say about the China tire vs. the American tire so this should put the issue to rest. BTW the TeraFlex is one mean looking tire that I can't wait to try out!!