Squirrelly - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

anth331 · 11-24-2020, 04:01 PM

I have a 2012 2SS with 53,000 miles. In the last 3 months I have put new tires (p-zeros) new rotors (OEM) brake pads (Brembo). I had a 4 wheel alignment done also. While driving home this morning from work, I was having a little fun by myself on the road. I started to brake a little hard because, I was going around 85 and wanted to slow back down to the speed limit. When I hit the brakes, the back end got real squirrelly on me. I’m on a smooth 4 lane road by myself dry etc. It only does it at faster speeds and hard braking. High speeds and braking normally, the rear end doesn't move around. It really caught me off guard. It was like stomping it from a stop with traction control off. Anybody have any ideas as what it could be?

jethrobandit · 11-24-2020, 04:17 PM

Sounds like a bit of oversteer to me. Hitting the brakes hard at higher speeds causes the weight to shift forward more rapidly and loosen up the rear. That coupled with cool morning surface temps and summer tires, plus potentially 8-9 year old shocks can make things a little loose in the rear.

SIM GhostrdrZ · 11-24-2020, 04:24 PM

I’ll state the obvious; jack it up and check for any loose or worn out suspension pieces. If nothing loose from alignment bolts being left loose or just worn out then I’d bleed the brakes to make sure all corners are braking at the same time.

I wouldn’t think tires are the issue but check lug nut torque and rotors/wheels are all flush and secured by torquing lugs.
Good luck

pnwdan · 11-24-2020, 04:36 PM

Also depending on the rear camber and how many miles you have on the tires they might be a bit slick still. I find my car is loosey goosey with new rears until they break in a bit and gain a bigger contact patch from the bit of rear camber.

anth331 · 11-24-2020, 05:11 PM

Tires have 120 miles on them

SIM GhostrdrZ · 11-24-2020, 05:28 PM

If it didn’t do it before and it’s doing it now, then I always go back over what was done.
You might benefit from many suspension upgrades but it shouldn’t make you feel scared of braking at 85mph. If the alignment is making it that way, get your money back or have them redo it until it’s correct or they point you to what part(s) are worn out.

Good luck

1JEWLDSSRS · 11-25-2020, 08:59 AM

Wow, I have never had that happen. I would have the alignment checked for sure, it shouldn't do that badly, it might seem kinda loose as when the nose dives down the rear will raise a bit, but shouldn't be too bad. Also the summer tires could be an issue to add to it. Good luck.. Hope you get it resolved.

anth331 · 11-25-2020, 10:17 AM

Let’s just say that the “Pucker” factor was high.

BMR Sales · 11-25-2020, 02:39 PM

What was the Ambient Temperature?

anth331 · 11-25-2020, 03:42 PM

It was 62 degrees at 04:45

Norm Peterson · 11-26-2020, 08:28 AM

Sounds like you haven't put enough miles on those new tires to get all of the mold release agent scrubbed off.

You also changed brake pads. If they offer stronger bite than Chevy's OE pads, plan on teaching your right foot how to be smarter about modulating the braking than just choosing "easy-normal" or "hard" with nothing in between.

Norm

TheFlyingBananaSS · 11-26-2020, 08:34 AM

You could also use "threshold braking" until you get things figured out.

anth331 · 11-26-2020, 08:50 AM

Maybe it’s just the tires. I went with all OEM everything, pads, rotors,

SIM GhostrdrZ · 11-26-2020, 09:04 AM

How many miles are on your Camaro. It’s just odd to have anything new to cause this. Try warmer temps, I hated the factory P zero tire because it was like driving on ice in cold temps. But it would act like ice at all speeds, not just braking and only in the rear. I’d still think just checking for worn or loose rearend suspension would be a good thing. If it’s all stock then the rearends do like to steer but not to a white knuckle.
Good luck and be careful as you troubleshoot.

11-24-2020, 04:01 PM	#1
anth331 Drives: 12SS Join Date: Apr 2010 Location: Dayton, Tx. 77535 Posts: 728	Squirrelly I have a 2012 2SS with 53,000 miles. In the last 3 months I have put new tires (p-zeros) new rotors (OEM) brake pads (Brembo). I had a 4 wheel alignment done also. While driving home this morning from work, I was having a little fun by myself on the road. I started to brake a little hard because, I was going around 85 and wanted to slow back down to the speed limit. When I hit the brakes, the back end got real squirrelly on me. I’m on a smooth 4 lane road by myself dry etc. It only does it at faster speeds and hard braking. High speeds and braking normally, the rear end doesn't move around. It really caught me off guard. It was like stomping it from a stop with traction control off. Anybody have any ideas as what it could be?

11-24-2020, 04:17 PM	#2
jethrobandit Drives: 2013 Black 2SS Join Date: Feb 2013 Location: Hendersonville, TN Posts: 77	Sounds like a bit of oversteer to me. Hitting the brakes hard at higher speeds causes the weight to shift forward more rapidly and loosen up the rear. That coupled with cool morning surface temps and summer tires, plus potentially 8-9 year old shocks can make things a little loose in the rear. __________________ 2013 2SS ::: MiSSy BTR Stage 3 :: GM 3.91 :: Eaton TrueTrac :: SW LT Headers :: Elite Catch Can :: CAI :: ADM Cold Scoop :: VMAX ported TB :: Forza 3Way :: BMR Lowering Springs/Toe Rods/Lower CA/Trailing Arms/Subframe Bushings

11-24-2020, 04:36 PM	#4
pnwdan Drives: 2014 2SS/RS Join Date: Jan 2018 Location: Washington Posts: 848	Also depending on the rear camber and how many miles you have on the tires they might be a bit slick still. I find my car is loosey goosey with new rears until they break in a bit and gain a bigger contact patch from the bit of rear camber. __________________ 2014 2SS/RS LS3/M6

11-25-2020, 08:59 AM	#7
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 11,435	Wow, I have never had that happen. I would have the alignment checked for sure, it shouldn't do that badly, it might seem kinda loose as when the nose dives down the rear will raise a bit, but shouldn't be too bad. Also the summer tires could be an issue to add to it. Good luck.. Hope you get it resolved. __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

11-26-2020, 08:28 AM	#11
Norm Peterson corner barstool sitter Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012 Location: Eastern Time Zone Posts: 6,990	Sounds like you haven't put enough miles on those new tires to get all of the mold release agent scrubbed off. You also changed brake pads. If they offer stronger bite than Chevy's OE pads, plan on teaching your right foot how to be smarter about modulating the braking than just choosing "easy-normal" or "hard" with nothing in between. Norm __________________ '08 GT coupe 5M (the occasional track toy) '19 WRX 6M (the family sedan . . . seriously)

11-24-2020, 04:24 PM	#3
SIM GhostrdrZ Drives: ‘14 Z/28 ‘14 ZL1 M6 vert Join Date: Jul 2015 Location: Ohio Posts: 1,283 View My Garage	I’ll state the obvious; jack it up and check for any loose or worn out suspension pieces. If nothing loose from alignment bolts being left loose or just worn out then I’d bleed the brakes to make sure all corners are braking at the same time. I wouldn’t think tires are the issue but check lug nut torque and rotors/wheels are all flush and secured by torquing lugs. Good luck

11-24-2020, 05:11 PM	#5
anth331 Drives: 12SS Join Date: Apr 2010 Location: Dayton, Tx. 77535 Posts: 728	Tires have 120 miles on them

11-24-2020, 05:28 PM	#6
SIM GhostrdrZ Drives: ‘14 Z/28 ‘14 ZL1 M6 vert Join Date: Jul 2015 Location: Ohio Posts: 1,283 View My Garage	If it didn’t do it before and it’s doing it now, then I always go back over what was done. You might benefit from many suspension upgrades but it shouldn’t make you feel scared of braking at 85mph. If the alignment is making it that way, get your money back or have them redo it until it’s correct or they point you to what part(s) are worn out. Good luck

11-25-2020, 10:17 AM	#8
anth331 Drives: 12SS Join Date: Apr 2010 Location: Dayton, Tx. 77535 Posts: 728	Let’s just say that the “Pucker” factor was high.

11-25-2020, 02:39 PM	#9
BMR Sales Drives: Race Car Join Date: Sep 2009 Location: Seffner, FL Posts: 6,226	What was the Ambient Temperature?

11-25-2020, 03:42 PM	#10
anth331 Drives: 12SS Join Date: Apr 2010 Location: Dayton, Tx. 77535 Posts: 728	It was 62 degrees at 04:45

11-26-2020, 08:34 AM	#12
TheFlyingBananaSS Evil Genius of Chevrolet Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017 Location: New York Posts: 3,260	You could also use "threshold braking" until you get things figured out. __________________ GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.

11-26-2020, 08:50 AM	#13
anth331 Drives: 12SS Join Date: Apr 2010 Location: Dayton, Tx. 77535 Posts: 728	Maybe it’s just the tires. I went with all OEM everything, pads, rotors,

11-26-2020, 09:04 AM	#14
SIM GhostrdrZ Drives: ‘14 Z/28 ‘14 ZL1 M6 vert Join Date: Jul 2015 Location: Ohio Posts: 1,283 View My Garage	How many miles are on your Camaro. It’s just odd to have anything new to cause this. Try warmer temps, I hated the factory P zero tire because it was like driving on ice in cold temps. But it would act like ice at all speeds, not just braking and only in the rear. I’d still think just checking for worn or loose rearend suspension would be a good thing. If it’s all stock then the rearends do like to steer but not to a white knuckle. Good luck and be careful as you troubleshoot.