this post was submitted on 26 Aug 2026
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me_irl
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Every certified Subaru mechanic and mechanics working directly for Subaru have always said I only needed two when one tire needed complete replacement for my Forester.
As long as they are within 1/4" diameter variance this is true, otherwise you FUBAR the viscous coupling over time. Which is why most mechanics default to 'just replace all of them'.