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Old 07-17-2011, 02:51 PM
Yorgi's Avatar
Yorgi Yorgi is offline
Officially Welcomed to the 'Fest
Location: Toronto
Join Date: Mar 2005
Posts: 3,650
Mein Auto: '04 M3 / '06 650i Cab
Fine groves in the rotors are not a big issue; they will not affect performance or cause vibrations.

When you take the car in have the mechanic measure the rotor runout. It takes 5 minutes. BMW recommends replacing rotors when there is more than 0.2mm of runout.
Straight lines are for fast cars...turns are for fast drivers
'04 M3 - track
'06 650i Cab - daily driver
'02 Highlander - kid hauler
'01 330Ci - winter beater