I replaced my wifes Dunlop SP Sport 4000s on her van with between 4/32nds and 5/32nds tread remaining. Had it been April, I would have run another 5K miles on them, but with winter arriving, I didn't want to get them worn down to nothing and then have some snow arrive.
Thats just my opinion, your mileage may vary.
TB
Tony Boner
Personal: 98cdw27@charter.net Work: tony.boner@sun.com
Saving the computer world from WinBloze as Unix/Solaris/Java Guru
http://www.sun.com 1998 Contour SVT Pre-E1 618/6535 Born On Date: 4/30/1997
Now with Aussie Bar induced mild oversteer.