Poloman,
I am not sure what he means by "all positive". If this means toe-out, I do not agree, for the rear. You can go "0" toe in the rear, but going positive(toe out) could make the rear a little too loose and unpredictable.
If you start with "0" toe statically, when you accelerate, the rear wheels will squat and give you some toe-in as it is designed to do.
With that said, what is your setup? Wheels/tire size/shocks/springs? Are you lowered? Any reason, other then wear, that you would move from factory specs??
Most aftermarket tires do give longer life then 5K miles, ON THE STREET, but I have not had personal experience with the Toyo's. My friend Peter uses them and loves them, but I cannot compare the wear factor, since he does a ton of track days.
HTH,
LarryB