In a message dated 2/24/04 6:40:38 AM Pacific Standard Time, UltraMonzaWest@aol.com writes: and isn't the max diameter marked on the drum from the factory? Matt Max diameter and runout are NOT the same thing... Hankie... 'Splain it too him. Tim Abney CORSA and I.E.C.C. Member '65 Monza Coupe '61 Lakewood '62 700 Sedan (not yet roadworthy)