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'08 STS-V Sedan Black Formerly three CTS-V's, XLR and STS4N*
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868 Posts
Discussion Starter #1
I have the correct part numbers according to Brakemotive but they will not clear the emergency brakes. They get hung up going one about an 1.5" from going on all of the way.
 

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08 STS4 V8 1SG & 04 SRX4 V8 & 01 Monte SS
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5,016 Posts
Time for the stupid questions ...

You didn't accidentally set the parking brake with the old rotors off did you?
Can you adjust the parking brake shoes to let them retract more?

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Rotate the parking brake adjusting nut (2)


That step is from brake shoe replacement, now supposedly the parking brake is auto adjust, however there is this adjuster too.
 

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2007 sts-v, 2011 Escalade EXT
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382 Posts
Or the front rotors on the back? I believe the bigger ones go on the back. I guess check the hats and see if they are different. Gotta be something simple that just got missed by accident
 

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'08 STS-V Sedan Black Formerly three CTS-V's, XLR and STS4N*
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868 Posts
Discussion Starter #7
Rotors are in the right spots. See the photo above and we even confirmed the part numbers to be in the right locations. The car is at a busy performance shop. I would find it off if they had not pulled the shoes all the way in before putting on the rotor but stranger things have happened and will call them on this.

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Confirmed that the e brake is pulled all the way back. The tech working on my car is a 30 year master tech and he says they cannot go back any more. They are tight as can be.
 

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'06 STS-V, '17 CTS-V
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777 Posts
Huh...I thought it would be b/c the emergency brake was engaged by the looks of those pictures. I still think there is an emergency brake issue here, something is out of adjustment in the linkage. If the other rear rotor fit, this one should too. I highly doubt that they shipped two different rear rotors in the same box...
 

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'06STSV(sold), '13 SHO
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616 Posts
Is it one side or both that are bad? Does anyone have measurements on what OEM spec drum ID should be so that we can compare?

My gut says the emergency brake adjustment needs to be backed out more, but 30yr mechanic would know that and have done it so now we just need to compare bore of OEM to these brakemotive ones. This is the 1st time I have heard anyone have an issue.. Brakemotive is VERY good about responding to issues and will take care of you, just have to contact them. I have not installed my STSV set yet, will see if I have a way to measure the bore at home to give you a measurement to compare...
 

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'08 STS-V Sedan Black Formerly three CTS-V's, XLR and STS4N*
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868 Posts
Discussion Starter #10
I ended up using the AC Delco replacement rear rotor with no issues. In comparing the two rotors it is obvious that the Brakemotive rotor is not bored out the same as the factory rotor. They have the same opening diameter but at the deepest point the Brakemotive rotor is tapered in a bit. This is on both rear rotors. Brakemotive was very good about accepting the return on their rotors and I provided them with photos for their records of the differences. I hope nobody else has these issues since the Delco rotors are way more expensive than the whole Brakemotive kit.
 

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'06STSV(sold), '13 SHO
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616 Posts
Glad you got it sorted out Commander, sorry to hear they do not fit. now I might have to look at installing mine to make sure they work, even though I don't need brakes yet!

Any chance you took a measurement of the AC Delco unit before you put them on? Is the taper visible in the brakemotive?
 

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2007 Cadillac STS-V Black On Black
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1,428 Posts
Glad you got it sorted out Commander, sorry to hear they do not fit. now I might have to look at installing mine to make sure they work, even though I don't need brakes yet!

Any chance you took a measurement of the AC Delco unit before you put them on? Is the taper visible in the brakemotive?
I gotta see if mine fit too!
 

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'08 STS-V Sedan Black Formerly three CTS-V's, XLR and STS4N*
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868 Posts
Discussion Starter #13
Perhaps they just got a bad lot of these rotors or perhaps there was a change in the ebrake on the 08-09 car. We did not take a measurement of the internal tapering on the rotor. We did measure the opening and they are identical with the factory rotor at the opening which is why they start to go on like normal then get pinched.
 

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2007 Cadillac STS-V Black On Black
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1,428 Posts
Perhaps they just got a bad lot of these rotors or perhaps there was a change in the ebrake on the 08-09 car. We did not take a measurement of the internal tapering on the rotor. We did measure the opening and they are identical with the factory rotor at the opening which is why they start to go on like normal then get pinched.
StormtrooperJun was the first to recommend these brakes and he has an 08 so I'm not sure if that's what it is. Did you have to specify vehicle year during checkout?
 

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'06STSV(sold), '13 SHO
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616 Posts
Well this combined with looking at my rotors I can see they are pretty warn (big lip in inside and outside edge were pads do not ride), and the extreme amount if brakedust of the current setup have me strongly thinking about doing full brakes today on the V.

I drove 80 miles yesterday, mostly on highway not braking and lastnight when doing tire pressure I noticed the wheels were already grey from the dust and the car was washed Friday night! hopefully these new brakemotives are less dust like everyone says..

I will start with the rear brakes 1st..
 

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06 STS-V & 06 STS 4 (sold 2016)
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2,740 Posts
My dealer put my Brake Motive pads and rotors on my 06 with no issues. They're really great. I'd say about 10 times less dust.
 

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2009 CTS-V, 2008 STS-V
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31 Posts
StormtrooperJun was the first to recommend these brakes and he has an 08 so I'm not sure if that's what it is. Did you have to specify vehicle year during checkout?
I didn't do anything other than check on ebay if it would fit the vehicle which it says it would.

I checked their ads today and it did pop up this message about fit that wasn't there before...

"Cadillac CTS-V 2004 - 2007

Cadillac STS 2006 - 2010 Models With Heavy Duty J56 Brake Package ONLY (CHECK YOUR VEHICLES' RPO CODE STICKER BEFORE PURCHASING!!)

Cadillac STS-V 2006 - 2010"
 

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STS-V 1 OF 3 BLK ICE & TANGO RED
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680 Posts
I have an 09 and have used Brakemotive for years, never any problems. However over time the drilled rotors develop hair-line cracks in the inner holes in the inner portion of the rotor. I experienced this with Brembo as well so I am assuming it is the nature of the beast (drilled rotors). But more importantly, no broken rotors and I really really "drive" my V. Brakemotive will easily replace rotors that exhibit this within one year of purchase.
 

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'06 STS-V, '17 CTS-V
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777 Posts
Installed my Brakemotive set on all four corners today. Went on with absolutely no issues, perhaps the easiest brake job I've ever done, and it was my first time doing fixed calipers! $217.00 myself vs. the $800 someone else stated that they paid the dealer to do it (granted, I have access to a lift and air tools).
 
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