Anyone familiar with using a Z rated car tire on the back of a motorcycle. I have seen nothing about any such thing on this site. A buddy of mine who rides a rice burner says it is all over the Honda forum and sounds like common practice for those who want really long tire life. Seems like the designs are so radically different that I would fear contol and traction would be severely sacrificed. Although it's his life, I keep telling him a little more tire life is not worth his life. How do I knock some sense in him. Need some contrary opinions if anyone has any experience. Thanks