Subject	The reason that you would need to use an on-car brake lathe
Posted by	canyoncarver on June 16, 2009 at 2:43 PM
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In Reply To	on-car rotor lathe necessary? posted by evan_aggie on June 15, 2009 at 03:33 PM
Message	is mostly because there is too much runout in the hub itself. The fsm allows for .005" rotor runout. This would be checked with a dial indicator set-up while the rotor is bolted to the hub. Since installing my BBK, I've had a little more brake shake than I did with oem sized rotors. Checking the rotor runout to itself (off the car) is around .002". Checking the hub runout shows a little over .005. No matter what holes I locate the rotor to, I can't get less than .004" runout. I have two choices to get rid of the runout: a) on-car brake lathe, or b) re-cut the hub face on a lathe. May plans are to install new wheel bearings and re-cut the hub while it is off the car.
Follow Ups	on-car rotor lathe necessary? - evan_aggie 15:33:55 06/15/09 On car lathe work is probably the best, but will you really - Zirvana 16:14:11 06/15/09 Re: On car lathe work is probably the best, but will you really - evan_aggie 16:29:02 06/15/09 It makes a difference on some, and there was a TSB on it. - Audioquest 17:23:36 06/15/09 The reason that you would need to use an on-car brake lathe - canyoncarver 14:43:56 06/16/09
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