Lowering w/MRC
Thread Starter
Team Owner
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
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Lowering w/MRC
So if I have the Z lowered on the stock bolts, is the loss in ride height going to drastically affect the MRC ? I have no doubt in my mind that the stage 2 splitter will ground more often no matter how careful I am. Thoughts y'all ?
Team Owner
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If you lower a car on OEM shocks, you will be limiting the amount of damping available. It may not be noticeable to you on the street, but it will have some performance consequences, particularly at the limits. Chassis upset may be more prominent due to the reduced shock travel/damping. Increased chassis stability provides more grip.
We've been discussing MSRC tuning on various threads recently, and the TPC Racing/DSC Sport MSRC controller developed by former Rolex 24 Hour winner, Mike Levitas. Mike recommends stock ride height and a specific alignment along with his DSC Sport MRSC controller settings for best performance.
Lowering is certainly OK, but to do it right, a lot of other chassis tuning is necessary to match the other suspension components to the ride height.
We've been discussing MSRC tuning on various threads recently, and the TPC Racing/DSC Sport MSRC controller developed by former Rolex 24 Hour winner, Mike Levitas. Mike recommends stock ride height and a specific alignment along with his DSC Sport MRSC controller settings for best performance.
Lowering is certainly OK, but to do it right, a lot of other chassis tuning is necessary to match the other suspension components to the ride height.
Last edited by Foosh; Mar 4, 2017 at 04:09 PM.
Thread Starter
Team Owner
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Foosh, very valid points. I thank you. I do not track the Z. It is my long distance pleasure touring car which is what made me ask. If the CTS-V had run flats I'd be inclined to take it. That was the original thought behind its purchase.
Team Owner
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Thread Starter
Team Owner
Joined: Sep 2005
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Heh ........ So far I've had two dealerships that I've asked today refuse to do it. Crazy
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Thread Starter
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
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Simply lowering it. They said it would affect the warranty. Go figure. 
Team Owner
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St. Jude Donor '15
"In honor of jpee"
Mike, I don't know if the MSRC is similar to the older one in C6s, but if it is, the dealers may not be all off base. Recall that compressing those shocks provides for less travel yet they still have to do the job. This may have compromised some of the older version MSRC shocks. I do know that the LGM ad says this about its "drop spindles": "this set of four spindles will allow you to lower the ride height of your Corvette 1 full inch over stock while retaining the full shock travel and correct suspension geometry."
It's possible that dealers have been warned about the reduced travel of the shock due to lowering, but I don't know that for certain.
It's possible that dealers have been warned about the reduced travel of the shock due to lowering, but I don't know that for certain.
Last edited by AORoads; Mar 4, 2017 at 06:16 PM.
Thread Starter
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
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Could very well be. I know that my servicing dealer flat out refused to lower a new Grand Sport they delivered two weeks ago that came in today for the first oil change.
Race Director
Joined: May 2001
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That's crazy that any dealer would claim it would affect the warranty! If GM was against this practice they wouldn't provide the simple adjustment for it in the first place! Lowering it on stock bolts doesn't even bring it down by a full inch, so it's not like you're talking about a 2 or 3 inch drop here that could have major repercussions.
Thread Starter
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
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That's what I thought. Sadly, it seems more and more dealers are getting **** retentive as GM turns the screws on warranty issues.
Thread Starter
Team Owner
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Car will be at my servicing indie week after next. Guess I will have them do it while it is up in the air.
Drifting
Joined: May 2006
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From: Raleigh NC
If you lower a car on OEM shocks, you will be limiting the amount of damping available. It may not be noticeable to you on the street, but it will have some performance consequences, particularly at the limits. Chassis upset may be more prominent due to the reduced shock travel/damping. Increased chassis stability provides more grip.
We've been discussing MSRC tuning on various threads recently, and the TPC Racing/DSC Sport MSRC controller developed by former Rolex 24 Hour winner, Mike Levitas. Mike recommends stock ride height and a specific alignment along with his DSC Sport MRSC controller settings for best performance.
Lowering is certainly OK, but to do it right, a lot of other chassis tuning is necessary to match the other suspension components to the ride height.
We've been discussing MSRC tuning on various threads recently, and the TPC Racing/DSC Sport MSRC controller developed by former Rolex 24 Hour winner, Mike Levitas. Mike recommends stock ride height and a specific alignment along with his DSC Sport MRSC controller settings for best performance.
Lowering is certainly OK, but to do it right, a lot of other chassis tuning is necessary to match the other suspension components to the ride height.
I'm taking my car to Mike soon. He told me to lower using stock bolts, ride height has to be exactly measured; turning the bolts to stop is insufficient.
Also for the DSC, he said the corners have to be weighted.
I'm sure as I've gotten faster at VIR, my lowering via the stock bolts simply to stop has impacted overall vehicle performance in a negative manner.
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Le Mans Master
Joined: Jan 2017
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From: New England
I have MSRC and one of my first mods was to lower the car on the stock bolts. When I read about the reaplcement costs for the suspension on theses cars, I have decided to keep it stock. Quite honestly I absolutely love how this car handles in stock form...