Originally Posted by BAC5.2
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.
Of course they are different, since they have different diffs.
As for your 'period' - I have no time to argue with nonsense. No four tires will have EXACTLY the same circumference.