Shoot I need to make a video to explain all this lol
Cause these questions will never end and I have had debates on this with people for years!
OMGWTFBBQ is right excessive toe will eat up tires! I know first hand!!! I had my suspension done at NTB once and told the guy .2 total toe in the rear and he slammed it to 2.0 total toe in the rear (this was in my s2k) lets say I barely got it 3/4 mile before turning around and having him fix it. *note* always look at the sheet even if the mech says and repeats back the same specs you gave them!!! When we took the wheels off to look at the wear I literally was peeling thousands of miles of rubber that had rolled upon the edges of the tires! the tires were shreading sooooo bad!
A little toe can go to help rear end stability as well as help curb camber wear and induce a more normal flat wear.