cross-drilled & slotted rotors sanity check
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From: washington, dc
'11 e550 4matic
cross-drilled & slotted rotors sanity check
ok so i ordered some cross-drilled and slotted rotors from some company in cali for my 03 clk500. the rear rotors looked fine when i put them on. however, when i went to do the front, i found what appeared to be two front LEFT rotors because the pattern on both of them were the same... meaning if i were to put the front right rotor on, it's pattern would have gone "against" the rotation, while the front left would go with the rotation like both rear ones do. does that make sense?
anyway, i called the company back to ask and they claim that's how mercedes does it for my car. however, it just strikes me real odd that 3 of the rotors will have the cross-drilled & slotted patten going one way, while only the front right will have it going the opposite??!?!
have any of you come across this same thing? is the rotor company trying to pull a fast one over me to cover their mistake? any help, pics or ammo would be much appreciated.
anyway, i called the company back to ask and they claim that's how mercedes does it for my car. however, it just strikes me real odd that 3 of the rotors will have the cross-drilled & slotted patten going one way, while only the front right will have it going the opposite??!?!
have any of you come across this same thing? is the rotor company trying to pull a fast one over me to cover their mistake? any help, pics or ammo would be much appreciated.
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From: washington, dc
'11 e550 4matic
i hope attached the pictures correctly.
so one pic shows the cross-drilled & slotted pattern of the two front rotors. notice they are both going in the same direction.
in the 2nd pic, i tried to show the "vents' within the rotors themselves. since these 2 rotors are of exactly the same mold, one of these front rotors has to be rotating the wrong way, right?
so one pic shows the cross-drilled & slotted pattern of the two front rotors. notice they are both going in the same direction.
in the 2nd pic, i tried to show the "vents' within the rotors themselves. since these 2 rotors are of exactly the same mold, one of these front rotors has to be rotating the wrong way, right?
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C63s Cabriolet, BMW M4, Civic
i hope attached the pictures correctly.
so one pic shows the cross-drilled & slotted pattern of the two front rotors. notice they are both going in the same direction.
in the 2nd pic, i tried to show the "vents' within the rotors themselves. since these 2 rotors are of exactly the same mold, one of these front rotors has to be rotating the wrong way, right?
so one pic shows the cross-drilled & slotted pattern of the two front rotors. notice they are both going in the same direction.
in the 2nd pic, i tried to show the "vents' within the rotors themselves. since these 2 rotors are of exactly the same mold, one of these front rotors has to be rotating the wrong way, right?
Read mine post #2 regarding rotors rotation....
https://mbworld.org/forums/clk-class...-rotation.html
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From: washington, dc
'11 e550 4matic
Read mine post #2 regarding rotors rotation....
https://mbworld.org/forums/clk-class...-rotation.html
https://mbworld.org/forums/clk-class...-rotation.html
so klinh, if i understand your insight on that other port correctly while looking at the pic that shows the inside of these rotors... the right rotor is the one that would be going the wrong way, correct?
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Yes. Is that the one that does not march up with the rest of the rotors?
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From: washington, dc
'11 e550 4matic
yeah, that's the one i've been trying to ask the company about. it's the front right rotor. i've already put on the rear rotors and they were both opposite of each other and rotating the correct way, just like the direction of a tire tread.
i've emailed the company twice already and they seem so sure of themselves and continue to tell me that this is the way mercedes does it.
i've emailed the company twice already and they seem so sure of themselves and continue to tell me that this is the way mercedes does it.
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Thread Starter
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From: washington, dc
'11 e550 4matic
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From: NY/CT
CLK 500
That's just wierd. They should never be the same. Rotors that are slotted/cross-drilled are always directional. The slots are meant to dissipate heat away from the center. That's the main purpose of having slots and cross drills.
Last edited by gottarex; Jun 26, 2009 at 04:16 PM.
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From: Columbus, OH
2003 CLK500
I believe you're right, but I don't have any documentaion.
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From: Columbus, OH
2003 CLK500
Yeah, but haven't had any problems with them. The stopping power is 50 times better than stock, but I don't know if it has to do with the direction of the holes or not.
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From: SCV SoCal
2002 CLK430
i hope attached the pictures correctly.
so one pic shows the cross-drilled & slotted pattern of the two front rotors. notice they are both going in the same direction.
in the 2nd pic, i tried to show the "vents' within the rotors themselves. since these 2 rotors are of exactly the same mold, one of these front rotors has to be rotating the wrong way, right?
so one pic shows the cross-drilled & slotted pattern of the two front rotors. notice they are both going in the same direction.
in the 2nd pic, i tried to show the "vents' within the rotors themselves. since these 2 rotors are of exactly the same mold, one of these front rotors has to be rotating the wrong way, right?
There are directional vanes, and there are radial vanes. Rotors with directional vanes have a left or right side. You don’t put the left on the right or vice versa. Mercedes Benz cars come with either style, depending on the brake package. For example, a W208 CLK55 has directional vanes. A W208 CLK430 has radial vanes. Your photo is of two left rotors with directional vanes. One should be returned for a right side rotor.
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C63s Cabriolet, BMW M4, Civic
There are directional vanes, and there are radial vanes. Rotors with directional vanes have a left or right side. You don’t put the left on the right or vice versa. Mercedes Benz cars come with either style, depending on the brake package. For example, a W208 CLK55 has directional vanes. A W208 CLK430 has radial vanes. Your photo is of two left rotors with directional vanes. One should be returned for a right side rotor.
I can't believe you guys are still discussing about it!! Excellent infos, MarcusF. Hope the debating stop, now !!
Thread Starter
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From: washington, dc
'11 e550 4matic
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From: SCV SoCal
2002 CLK430
i bought them from irotors out in corona, ca and i've taken back everything i've learned here on this thread to them and they still insist that there's no such thing as a right side front rotor for our model. and they sound pretty confident about it too. so now i dunno what to do
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95civicsi, 2001 e320, 2001 integra type-r, 2005 clk500
what do you think about this place?? http://www.trinetmotorsports.com/
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From: washington, dc
'11 e550 4matic
that's what's so odd. i ordered a set for my older 2000 clk430 a few years back and didn't have this issue with them. in fact, i was actually pleased with the quality and haven't had any problems with them on the 430.
