Vented rotors - orientation difference?
Thread Starter
Super Member
Joined: Dec 2007
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C300 Sport 6MT
Vented rotors - orientation difference?
Dropped the car off for A1 service this morning and noticed something peculiar and can't believe I missed it until now.
The rotor orientation is different between the driver and passenger sides. That is, the drilled swirl/fan pattern is forward facing on the driver side and backward facing on the passenger side. I would've thought they'd either both be going fwd or both backward. It's as if my car had two of the same rotors installed vs one left and one right.
Quick sanity check please? Are your front rotors both facing the same way?
ps my dealer *finally* offers MB loaners; am cruising around in a brand new (96 miles on the clock) C300 4M w/ COMAND; although I've never been interested in paying up for Navi, the integration of the whole system will have me thinking twice next time around; lastly... driving this car for the short commute back to work solidifies my standing that I'll always be driving a 6-spd as my DD; can't stand the lag, whether in full auto or tip mode
The rotor orientation is different between the driver and passenger sides. That is, the drilled swirl/fan pattern is forward facing on the driver side and backward facing on the passenger side. I would've thought they'd either both be going fwd or both backward. It's as if my car had two of the same rotors installed vs one left and one right.
Quick sanity check please? Are your front rotors both facing the same way?
ps my dealer *finally* offers MB loaners; am cruising around in a brand new (96 miles on the clock) C300 4M w/ COMAND; although I've never been interested in paying up for Navi, the integration of the whole system will have me thinking twice next time around; lastly... driving this car for the short commute back to work solidifies my standing that I'll always be driving a 6-spd as my DD; can't stand the lag, whether in full auto or tip mode
Last edited by Doanster; Oct 12, 2011 at 02:29 PM.
Super Member
Joined: Nov 2008
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From: CALIFORNIA
2012 E350 RWD
You have the correct rotors installed correctly. Waiting for my tires to get installed right now and went ahead and checked for you. it is indeed different from the driver and passenger side. You have nothing to worry about.
Thread Starter
Super Member
Joined: Dec 2007
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C300 Sport 6MT
Thanks, Loonie. Wasn't actually worried, rather found it strange. MB opted against uniformity to save $$ by not having two drill patterns for left/right. Then again, maybe all drilled or slotted rotors employ this same thought process since it shouldn't affect (street driving that is) braking performance?
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Joined: Jan 2009
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From: Southwest USA
Another round of ICE
Same here for our C and E. With each hole an "independent event", I don't see how it matters where it is located relative to the others. The appearance of lining them up may be influenced by aesthetic concerns as well.
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From: Delaware
2004 Mazda6, 1993 RX7
^
Agree. Wilwood sells hard core racing rotors. They emphasize special directional curved vanes in the rotor, vs hole/groove orientation on the sides.
10-13-11 edit: fixed links
Wilwood.com/RotorListing
Wilwood GT48 Curved Vane Rotor
.
Agree. Wilwood sells hard core racing rotors. They emphasize special directional curved vanes in the rotor, vs hole/groove orientation on the sides.
10-13-11 edit: fixed links
Wilwood.com/RotorListing
Wilwood GT48 Curved Vane Rotor
.
Last edited by kevink2; Oct 13, 2011 at 09:05 PM. Reason: Fixed Links
