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Old 04-28-2014, 03:09 PM   #1
CrisisMusick
 
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Negatives to lowering Camaro?

I've been contemplating lowering my 2014 1LE anywhere between 3/4"- 1" in order to get it closer to the Z/28 stance. However, aside from of course driving over speedbumps and driveways, I've heard other negatives like the ruining the length of life for my shocks. I was looking into purchasing the BRM 1" lowering springs:
http://www.bmrsuspension.com/?page=p...&productid=836

I wanted to hear feedback on whether I should or not. My girlfriend already hates the ride on my 1LE sayings it's too "rough", but I figured this shouldn't be that different.
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Old 04-28-2014, 03:51 PM   #2
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That's a true statement about reducing the overall life of the factory shocks/struts. However, it's hard, if not impossible, to calculate just how long they will last. Some people have lowering springs and their factory components last for years, others aren't so lucky, and only get a few months out of them. I suppose it depends on how many miles you have on them already. With a 2014 1LE, I think you'd probably be safe for quite a while without having to worry about it. Also, you can expect a little stiffer ride with lowering springs. Probably not enough to worry about, but they do have a higher spring rate over the factory springs. I hear very, very few complaints from our customers who have made the switch!!!
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Old 04-28-2014, 04:42 PM   #3
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I have my BMR 1" springs ready to go. My only concern is dragging my headers, but I'll get over that as soon as I see it
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Old 04-28-2014, 04:48 PM   #4
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Quote:
Originally Posted by OmniCamaro View Post
I have my BMR 1" springs ready to go. My only concern is dragging my headers, but I'll get over that as soon as I see it
I had BMR 1" drop springs on my car with AR Headers and never had a problem.
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Old 04-28-2014, 04:49 PM   #5
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Rides stiffer and scrap my lower front splitter allot on driveways. That's about it for me. I went with BMR 1.4"/1" split kit.
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Old 04-28-2014, 05:05 PM   #6
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You change the roll center which usually makes the overall effect a poorer handling car.


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Old 04-28-2014, 05:18 PM   #7
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Car sits lower.
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Old 05-02-2014, 12:51 AM   #8
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Car sits lower.
That's a positive.
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Old 05-02-2014, 10:42 AM   #9
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I have bmr 1.4 all corners and it sits pretty well. But the ride is stiff. I had it for almost 2 years and shocks are still good. I will swap it though with a coil over because I need the car to be lower.
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Old 05-02-2014, 11:39 AM   #10
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Suspension geometry can be compromised and the negative camber gain from suspension can turn into negative camber loss.

In other words you can end up with a mean looking stance but your geometry works backward from design. The other negative is lower roll center.

At the number your looking at your probably OK for the geometry.
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Old 05-02-2014, 04:14 PM   #11
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Quote:
You change the roll center which usually makes the overall effect a poorer handling car.
so you are telling me now that I have just intalled 1" BMR drop springs, that my car is going to handle worse??
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Old 05-02-2014, 04:39 PM   #12
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Yes, that is usually true.


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Old 05-02-2014, 04:50 PM   #13
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I did BMR 1.2 inch drop on my car and it handles much better. A lot less body roll and no fighting with understeer.
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Old 05-02-2014, 04:58 PM   #14
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Eibach 1 inch drop, certainly feels like it handles much better, ride quality relatively uncompromised as well. I have never heard drop springs making your handling worse...

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Old 05-02-2014, 05:14 PM   #15
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The farther the center of gravity and the roll center are from each other the stronger the twisting force in turns.

On my EVO I bought a correction kit. I'm hoping something comes out for the ZL1.

I doubt you would notice on the street. Little surprised by the under steer comment. My car feels pretty balanced on the street.


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Old 05-02-2014, 05:25 PM   #16
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Oops, just realized I'm not on the ZL1 forum. Your results may vary based on the model but in general, messing with suspension geometry ends up in a net negative effect on handling.


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Old 05-02-2014, 06:24 PM   #17
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Ok ok. So why is every racecar I've ever seen lower than a "stock" car of the same make? Doesn't make sense at all to me that lowering will worsen handling.
Also, "handling" is not as simple as ride height. But I'm no expert!
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Old 05-02-2014, 06:31 PM   #18
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http://m.youtube.com/watch?v=UQ9ocXniUnI



The suspension geometry of a race car is set up for its given ride height.


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Old 05-02-2014, 06:45 PM   #19
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I have the eibach pro kit. Works great, looks good. The ride is def stiffer but what would you expect? I have longtube headers and ground effects. If you watch where you are driving you will never scrape.
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Old 05-02-2014, 07:50 PM   #20
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I'm not sure at which lowering amount the C5 geometry goes opposite, perhaps some of the vendors can provide that. I'll try to explain what happens when it passes the point of going too low.

Normally the lower balljoint is lower than the mounting point of the control arm. Using a right hand turn here is how the geometry works.

The driver side compresses and the movement arch forces the balljoint more outwards and increases the negative camber gain= more negative camber and a larger tire contact patch.
The passenger side will act the opposite and pull the ball joint inwards and decrease the negative camber gain to a more positive= larger contact patch.

Suspension that has equal or the balljoint end is higher than the mounting point will act as this. This is the exact opposite of what you want to happen.
The drivers side control arm will arch towards the cars center and pull the balljoint inwards decreasing the negative camber gain, removing increased contact patch opportunity.
The passenger side control arm will arch away from the cars center, and push the balljoint outward increasing the negative camber gain, removing increased contact patch opportunity.

Race cars have custom suspension, or dropped spindles to get the height.
As long as the geometry is not compromised, lowering will work fine

Edit just went and look at the front suspension of the ZL, and personally I would not go more than 1/2 to 3/4 lower. At 1 inch the control arm would be parallel with the body mount.

Last edited by Nor Cal ZL1; 05-02-2014 at 08:23 PM.
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Old 05-02-2014, 08:11 PM   #21
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Quote:
Originally Posted by prostcj View Post
The farther the center of gravity and the roll center are from each other the stronger the twisting force in turns.

On my EVO I bought a correction kit. I'm hoping something comes out for the ZL1.

I doubt you would notice on the street. Little surprised by the under steer comment. My car feels pretty balanced on the street.


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For roll center exactly this, The added leverage of the CG and roll center separation the stiffer the suspension must be to compensate.
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Old 05-03-2014, 08:54 PM   #22
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If you should decide sometime in the future to incorporate cut-out exhaust pipes into your car, you will need to undo the lowering of the car. A small change in road clearance may cock up the works big time. Look before you leap.
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Old 05-04-2014, 07:40 PM   #23
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just remember...everything is a little lower.



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Old 05-04-2014, 11:35 PM   #24
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Here's my clearance while I'm stock suspension. (Pic is like half a year old)

Should be interesting once I install my 1.25" pfadt springs...
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