GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

front rotor size??

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Old Jul 31, 2011 | 10:21 PM
  #1  
neonslay's Avatar
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GL450
Smile front rotor size??

hi everyone, been a loyal follower of these boards and i want to say thank you all for putting time and effort in creating such a knowledgeable board for pretty much everything.

fellas I do have a question. I am about to replace my rotors and brakes but am having a difficult time trying to find out what size my rotors are. numerous websites give me two different sizes for my 2008 GL450 so im rather lost.. i glanced at the manual and didn't see any spec info on this.

350mm or 375mm
what are the OEM rotor size?

any help on this i would greatly appreciate.
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Old Aug 1, 2011 | 08:54 AM
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wlee69's Avatar
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'13 CLS550, '17 Q7, '11 G550
If you have the vin number, and are friendly with the parts guy at your local dealership, he can tell you which size you have. I just went thru this replacing my rotors as well - but lucked out when I found that the '07 only came in the smaller size. I think in '08 they started to put the larger rotors on the cars with 19" or greater wheels, but I would call the parts guys at the dealership to make sure!
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