I have FZ4's on my CSVT right now that the previous owner put on. I don't have a lot of experience with different tires, but these are absolutely amazing IMHO. They grip tenaciously, but can will do a controlled slide too. I think they are pretty quiet, though mine are wearing down now and getting a little louder. I'm replacing them soon with probably the Sumitomo HTR+ mainly because the FZ4's are terrible in the snow, and I have to deal with a lot of snow here.
