Quote:
Originally Posted by TimT
Nitwit.
Fine toss away perfectly good parts..
So if the disk is machined down a "tiny" amount and is still within spec, that would be a bad thing?
You can find the wear limits for a brake disc cast or stamped on it somewhere...
Blanchard grinding is a preferred way to refinish disks..
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I usually replace them too.
Brake lathes are $5-10K new. My local shop paid $14K for their on-car lathe.
So.... most shops charge $15-20 to turn each rotor, and you can see why.
Yes, you can buy good quality rotors for $20 (or less) from o.e. suppliers (even Brembo). Of course we're talking about pedestrian passenger cars, not track toys or big trucks. I buy Bendix Global rotors for a Subaru Legacy/Outback for $18 front and $19 rear.
So rather than waiting for rotors to be turned, it's much faster to replace them. And for roughly $5 more, why not. Then it's brand new, no corrosion, under warranty. Would you rather have the car taking up a hoist for a couple hours?
If the arguement isn't about removing material, it might be about time and efficiency. Bigger, more expensive rotors (i.e. Porsche or F350) may change that relationship. YMMV.