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I have been driving the Camaro (1999 Camaro SS - T56 - Stock Rear) a while now and one thing that has been bothering me is this vibration that comes when I am taking a corner at over 25 or when accelerating out of a corner. I would like to note that I did not lower the car, I received it lowered and have not been able to figure out what they did. Everything looks stock, but it definitely sits lower than stock.
I was thinking that one of the previous owners lowered it by cutting the springs, but am not certain. It is my understanding that when lowering a car like this, angles can be messed up.
I guess what I am asking is, how can I figure out if the springs have been cut? What are the stock angles for the rear? What do you all recommend looking at to resolve this issue?
I will upload some pictures when I get off work and try to link a video of the vibration in question.
Thanks for your time. Rear, 305/35ZR18 Front, 265/35ZR18 Side shot
Last edited by SalvageSS; Apr 23, 2021 at 03:33 PM.
Reason: Added some pictures
Of course, I could not think of more to add at the time.
It's a shudder, it shakes the entire car, feels like the wheels are digging into the ground and snapping back. It comes from the rear, and happens whether I am turning left or right.
I have been unable to get a good clip of it recorded. I will be setting up the GoPro tomorrow and hopefully I can get something good then. Sorry for the delay.
I think I figured out what it is. Wheel hop. It did not happen at the track today, but it happens while on the street. I ran 9 laps today and had no issues with the "vibration" as I had previously called it. I think it may be a combination of the car being lowered and having 305's on the rear. I am looking into getting another wheel/tire setup, and will update when that happens.
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Vibration On Out of Corner Acceleration 
