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      04-14-2014, 02:10 PM   #3
MightyMouseTech
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Drives: 13 135i 6MT LeMans Blue MSport
Join Date: Feb 2013
Location: Ottawa, Canada

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Ya, they were pretty bad, that is why I took the pics.

Nice thing about the on car lathe is that it will compensate for the runout in the hubs as well as the rotor. Machining off the car can not get anywhere near as straight. After initial setup, the lathe was showing final runout as 0.0002" (that is the 0.2 you can see in the pic of the lathe) Not going to get much straighter than that. Most new rotors after install are not that good.
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