Looking for a little advice.
Thread Starter
Pro
Joined: Aug 2008
Posts: 704
Likes: 101
From: Duluth MN
Looking for a little advice.
I am in the market for some cross drilled rotors and ceramic pads in a package, not drilled and slotted. Any one can tell me where to get the best deal? Thanks!
Melting Slicks
Joined: Nov 2009
Posts: 2,922
Likes: 219
From: West Branch, MI
I have the drilled/slotted ones from BrakeMotive. He offers a discount to forum members as well, but I could not locate drilled only. I did find a full set of drilled rotors and ceramic pads F&R for $230 on the auction site from a seller called tutuauto with a 100% feedback rating. His shipping was free to the US but he's in Ontario. His set was $230.99. Gonna be hard to beat that unless Brakemotive offers drilled only. If he does, you can probably get a full set under $200.
Pro
Joined: Aug 2010
Posts: 593
Likes: 9
From: San Antonio Texas
If you have your heart and head set on drilled rotors then go for it. I would offer, since you asked for opinion, that the drilled rotors will eventually give you problems. Drilling holes creates stress risers which will eventually result in a crack. From a performance standpoint the drilled holes give you nothing, just a cosmetic benefit. I personally love the way they look, however, the failure mode is certain. I would go with the slotted ones and forget the drilled. I would stay with OEM GM parts on this one too for lots of really good safety reasons. Good Luck.
Thread Starter
Pro
Joined: Aug 2008
Posts: 704
Likes: 101
From: Duluth MN
If you have your heart and head set on drilled rotors then go for it. I would offer, since you asked for opinion, that the drilled rotors will eventually give you problems. Drilling holes creates stress risers which will eventually result in a crack. From a performance standpoint the drilled holes give you nothing, just a cosmetic benefit. I personally love the way they look, however, the failure mode is certain. I would go with the slotted ones and forget the drilled. I would stay with OEM GM parts on this one too for lots of really good safety reasons. Good Luck.
Pro
Joined: Aug 2010
Posts: 593
Likes: 9
From: San Antonio Texas
I have seen stress risers even with radiused edges due to poor machining control and technnique. In cast grey iron the matrix tends to tear rather than shear particularly if the tools or drills are dull. The history of the product as demonstrated by the large number of failures reported on this forum alone would indicate that the drilled rotors are suspect. Also, this is a SAFETY item and if it were me, I would trust the OEM who originally designed and more importantly tested the entire braking system. I love the way the drilled rotors look but I am not impressed with the functionality or the failure mode.
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Cruising
Joined: Mar 2012
Posts: 14
Likes: 0
From: northern va.
I got the package from Breakmotive for 180 to the door. Great deal, and good product,I'm very pleased. Go to thier web site and mention the forum n they will discount it for you. I've got the power stop cross drilled n slotted rotors on my 2004 F-150 . They've been on it for 6 years no problems .
Melting Slicks
Joined: Oct 2005
Posts: 2,989
Likes: 352
From: Carson City Nevada
Brakemotive. Mine are cross drilled without the slots. Had them on for a year now. Fantastic! $180.00 for brakes and rotors all the way around plus free shipping. Can't beat that with a stick.
Le Mans Master
Joined: Jul 2011
Posts: 7,428
Likes: 972
From: Morristown New Jersey
Oldtimer
I have seen stress risers even with radiused edges due to poor machining control and technnique. In cast grey iron the matrix tends to tear rather than shear particularly if the tools or drills are dull. The history of the product as demonstrated by the large number of failures reported on this forum alone would indicate that the drilled rotors are suspect. Also, this is a SAFETY item and if it were me, I would trust the OEM who originally designed and more importantly tested the entire braking system. I love the way the drilled rotors look but I am not impressed with the functionality or the failure mode.
I was recently told the same thing by an official at NCM. Explanation made worlds of sense.
Le Mans Master
Joined: Jul 2011
Posts: 7,428
Likes: 972
From: Morristown New Jersey
Oldtimer
The problem with the drilled rotors is the act of drilling, that heats up and stresses the metal causing micro fractures before the rotor is even used. These fractures get worse as the rotor is used. According to my source if the holes are in the original casting, this does not occur.
Melting Slicks
Joined: Oct 2005
Posts: 2,989
Likes: 352
From: Carson City Nevada
I have the drilled/slotted ones from BrakeMotive. He offers a discount to forum members as well, but I could not locate drilled only. I did find a full set of drilled rotors and ceramic pads F&R for $230 on the auction site from a seller called tutuauto with a 100% feedback rating. His shipping was free to the US but he's in Ontario. His set was $230.99. Gonna be hard to beat that unless Brakemotive offers drilled only. If he does, you can probably get a full set under $200.
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