Help-Front End "Shimmy" over 75MPH - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

2Intense · 07-19-2017, 03:29 PM

Anyone ever have a shimmy they couldn't solve...

MA2010SS · 07-19-2017, 06:46 PM

Where is the shake?? in the steering wheel or in the seat??? Front tire sustained visible damage but what about the rear?? Is that damaged on the inside of the wheel?

2Intense · 07-19-2017, 07:09 PM

It nicked the side wall on the right rear tire but no damage to the rim or anything, I replaced the tire. The damage in the photographs above are of the outboard bead seat of the rim. The shimmy comes from the right front of the car I can feel it in the wheel more so than the seat.

2Intense · 07-21-2017, 12:37 PM

Anyone have any thoughts or suggestions ?

I'm stumped!

Scott@Bjorn3D · 07-21-2017, 04:54 PM

Steering rack is probably damaged. Not good at all.

krusher · 07-21-2017, 05:14 PM

What about wheel bearing?

2Intense · 07-21-2017, 05:15 PM

I was wondering if it could be wheel bearing too....

JusticePete · 07-21-2017, 09:37 PM

I would check the new parts first. Have the wheel and tire road force balanced to verify the wheel is round and the tire not defective. A good tech that knows how to use the machine can diagnose even more issues with the wheel and tire. Start there.

2Intense · 07-22-2017, 07:07 PM

Wheel and tire will check today and they checked good. I went ahead and had the right front wheelbearings replaced with OEM parts. Problem remains.

Really scratching my head now. The mechanics feel if it were the rack and Pinion that I would feel it regardless of the speed. Starting to wonder if that bump to the rear tire did something to the Rear axle.

JusticePete · 07-22-2017, 09:53 PM

Check the rear wheel and tire as well.
Do you have alignment specd?

2Intense · 07-22-2017, 10:17 PM

Rear wheel at tire are new, I replaced both Front and rear right hand wheels and tires. It's been aligned each time after I have changed a component (4 times in last two weeks) and all well within specs..

JusticePete · 07-23-2017, 10:47 AM

Both rear wheels and tires tested well on the RF machine?
Did they give you a print out?

krusher · 07-24-2017, 06:33 PM

Did you have them road forced balanced though? I had a hell of a time once with a new tire. Had it balanced at 4 shops. Finally i got it to a point where it was still there but bearable. Later the tire must have worn in and the problem went away. Try changing the wheel from one side to the other and see if the prob follows. Might be like me and have a crap new tire.

JusticePete · 07-24-2017, 07:36 PM

It happens and Road Force Balancing by a tech that know how to use the machine does far more than just balance.

07-19-2017, 03:29 PM	#1
2Intense Drives: 2015 Camaro RS Join Date: Jan 2016 Location: California Posts: 99	Help-Front End "Shimmy" over 75MPH Anyone ever have a shimmy they couldn't solve... Last edited by 2Intense; 11-06-2017 at 07:10 PM. Reason: typo

07-19-2017, 06:46 PM	#2
MA2010SS Drives: 2010 Camaro SS Join Date: Aug 2010 Location: Somerset MA Posts: 725 View My Garage	Where is the shake?? in the steering wheel or in the seat??? Front tire sustained visible damage but what about the rear?? Is that damaged on the inside of the wheel? __________________ 2010 Camaro SS Whipple SC, CAI Inc Intake, TSP 1 7/8" LT headers no cats, 3" magnaflow exhaust, HPT, RX Catch Can, LSR Toe Rods, LSR Trailing Arms, ALKY Control Meth, McLeod RXT Twin Disc, ZL1 fuel pump, 3.73 ZL1 Differential Kit, BTR PDS Stage 2 Cam, Tuned by SLOWHAWK Performance Bridgewater MA

07-22-2017, 10:17 PM	#11
2Intense Drives: 2015 Camaro RS Join Date: Jan 2016 Location: California Posts: 99	Rear wheel at tire are new, I replaced both Front and rear right hand wheels and tires. It's been aligned each time after I have changed a component (4 times in last two weeks) and all well within specs.. Last edited by 2Intense; 11-06-2017 at 07:16 PM.

07-19-2017, 07:09 PM	#3
2Intense Drives: 2015 Camaro RS Join Date: Jan 2016 Location: California Posts: 99	It nicked the side wall on the right rear tire but no damage to the rim or anything, I replaced the tire. The damage in the photographs above are of the outboard bead seat of the rim. The shimmy comes from the right front of the car I can feel it in the wheel more so than the seat.

07-21-2017, 12:37 PM	#4
2Intense Drives: 2015 Camaro RS Join Date: Jan 2016 Location: California Posts: 99	Anyone have any thoughts or suggestions ? I'm stumped!

07-21-2017, 04:54 PM	#5
Scott@Bjorn3D Drives: Kami, 2013 2SS LS3 Luvin Join Date: Oct 2008 Location: Eufaula, Alabama Posts: 6,427	Steering rack is probably damaged. Not good at all.

07-21-2017, 05:14 PM	#6
krusher Drives: 2010 Camaro SS/RS CGM Join Date: Dec 2011 Location: Oskaloosa, IA Posts: 627	What about wheel bearing?

07-21-2017, 05:15 PM	#7
2Intense Drives: 2015 Camaro RS Join Date: Jan 2016 Location: California Posts: 99	I was wondering if it could be wheel bearing too....

07-21-2017, 09:37 PM	#8
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	I would check the new parts first. Have the wheel and tire road force balanced to verify the wheel is round and the tire not defective. A good tech that knows how to use the machine can diagnose even more issues with the wheel and tire. Start there.

07-22-2017, 07:07 PM	#9
2Intense Drives: 2015 Camaro RS Join Date: Jan 2016 Location: California Posts: 99	Wheel and tire will check today and they checked good. I went ahead and had the right front wheelbearings replaced with OEM parts. Problem remains. Really scratching my head now. The mechanics feel if it were the rack and Pinion that I would feel it regardless of the speed. Starting to wonder if that bump to the rear tire did something to the Rear axle.

07-22-2017, 09:53 PM	#10
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	Check the rear wheel and tire as well. Do you have alignment specd?

07-23-2017, 10:47 AM	#12
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	Both rear wheels and tires tested well on the RF machine? Did they give you a print out?

07-24-2017, 06:33 PM	#13
krusher Drives: 2010 Camaro SS/RS CGM Join Date: Dec 2011 Location: Oskaloosa, IA Posts: 627	Did you have them road forced balanced though? I had a hell of a time once with a new tire. Had it balanced at 4 shops. Finally i got it to a point where it was still there but bearable. Later the tire must have worn in and the problem went away. Try changing the wheel from one side to the other and see if the prob follows. Might be like me and have a crap new tire.

07-24-2017, 07:36 PM	#14
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	It happens and Road Force Balancing by a tech that know how to use the machine does far more than just balance.