Just changed my brake discs(Godspeed 335mm) and thought i would measure the thickness the results astounded me.New they measured 30.40mm thick the old ones were 28.28mm and 28.56mm the grooves had just worn flat and sounded like they were binding. thought they would have been a lot thinner my self especially looking at depth of new disv grooves.Jst thought id let you know the results.Also checked my run out and ive got 10thou and 14 thou and i believe Subaru recommend standard discs are not more than 4 thou out so not too bad i think, got it down from 38thou.
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