Originally Posted by dmanaenk
Latest "official" word is probably written by overly zealous lawyers. In reality 1/32nds is probably safe, especially for non-STI/spec.b.
If one is under warranty - I'd probably keep the wear equal. Otherwise I'd ran it if the price is good.
Neither the Spec-B, nor the STI, are more sensitive to different diameters than any other MT or 5EAT Subaru.
If you want to make sure you won't have a problem, make sure all 4 tires are the same exact diameter.