Rear end swaying back and forh driving straight - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

DrewIsAmus · 01-31-2014, 05:08 PM

So, I put on ICS N1 coilovers, Perrin 22mm rear sway and Stance lower control arms. I made sure everything is torqued to spec.
When I drive down the road going straight I can feel the rear end going one way or another. It's gets really bad when I turn the wheel!
Any suggestions on fixing it?
I was thinking of going back to the stock lower control arms to see if it helps.

Thanks in advance!

BlueDubbinTDI · 01-31-2014, 05:09 PM

Have you gotten an alignment yet?

Starscream15 · 01-31-2014, 05:09 PM

Maybe a silly question but.... Did you get an alignment after your work was done?

Ranatsu · 01-31-2014, 05:12 PM

you probably have some aggressive toe on one side or the other. Get an alignment asap before you kill yourself.

DrewIsAmus · 01-31-2014, 05:32 PM

No, alignment yet. Hadn't gone over 40mph.
I was just afraid the new crazy adjustable lower control arms were loose or something. It's been in the air more than on the ground in the past 3 days.
I'll get an alignment tomorrow.
Thanks everyone!

mike the snake · 01-31-2014, 06:25 PM

Probably toed out in the rear a bunch. That'll make the rear hunt badly.

Installing the LCA's the alignment is probably WAY off.

supramkivtt2jz · 01-31-2014, 06:45 PM

Census says: a shitload of toe. Be safe OP!

troek · 01-31-2014, 09:32 PM

heed everyones advice, toe will kill your tires faster than anything! not to mention you wouldnt want to crash.

anewprelusion · 02-01-2014, 12:22 AM

Same thing happened to me after installing rear LCA's. Ended up getting alignment done the same day. As others have mentioned, toe was way out of spec.

utekineir · 02-01-2014, 08:27 AM

What they all said.

I put on kwv3 a couple nights ago. Still no alignment (going to diy). But the car wasn't driven till a quick toe/camber check. I actually came up good on toe using a quick and dirty tape measure method. Car has been driving great, but I need to do a better check.

Going to get a couple 2x12" s today, build wheel platforms (with room for sliding tiles) and try get a better look.

Also grabbed 16 $8 scales from Walmart, the platforms are going to be made with a foot at each corner to work on the scales.

01-31-2014, 05:08 PM	#1
DrewIsAmus Member Join Date: Dec 2013 Drives: Dark Grey Metallic 2013 Subaru BRZ Location: Mont Belvieu, TX Posts: 86 Thanks: 29 Thanked 18 Times in 14 Posts Mentioned: 1 Post(s)	Rear end swaying back and forh driving straight So, I put on ICS N1 coilovers, Perrin 22mm rear sway and Stance lower control arms. I made sure everything is torqued to spec. When I drive down the road going straight I can feel the rear end going one way or another. It's gets really bad when I turn the wheel! Any suggestions on fixing it? I was thinking of going back to the stock lower control arms to see if it helps. Thanks in advance! __________________ My Build Thread

01-31-2014, 05:32 PM	#5
DrewIsAmus Member Join Date: Dec 2013 Drives: Dark Grey Metallic 2013 Subaru BRZ Location: Mont Belvieu, TX Posts: 86 Thanks: 29 Thanked 18 Times in 14 Posts Mentioned: 1 Post(s)	No, alignment yet. Hadn't gone over 40mph. I was just afraid the new crazy adjustable lower control arms were loose or something. It's been in the air more than on the ground in the past 3 days. I'll get an alignment tomorrow. Thanks everyone! __________________ My Build Thread

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01-31-2014, 05:09 PM	#2
BlueDubbinTDI Senior Member Join Date: Mar 2013 Drives: 2013 FR-S, 2012 MCS Location: Jax, FL Posts: 1,975 Thanks: 943 Thanked 570 Times in 356 Posts Mentioned: 4 Post(s)	Have you gotten an alignment yet?

01-31-2014, 05:12 PM	#4
Ranatsu Cone basher Join Date: Mar 2012 Drives: 2017 Subaru BRZ Series.Yellow Location: Dodgin cones in San Antonio, TX Posts: 800 Thanks: 51 Thanked 256 Times in 169 Posts Mentioned: 7 Post(s)	you probably have some aggressive toe on one side or the other. Get an alignment asap before you kill yourself.

01-31-2014, 06:25 PM	#6
mike the snake Senior Member Join Date: Jul 2013 Drives: 2013 BRZ Location: Norcal Posts: 1,592 Thanks: 1 Thanked 623 Times in 378 Posts Mentioned: 15 Post(s)	Probably toed out in the rear a bunch. That'll make the rear hunt badly. Installing the LCA's the alignment is probably WAY off.

02-01-2014, 12:22 AM	#9
anewprelusion Senior Member Join Date: Sep 2013 Drives: 2013 Subaru BRZ Limited Location: California Posts: 148 Thanks: 51 Thanked 86 Times in 46 Posts Mentioned: 8 Post(s)	Same thing happened to me after installing rear LCA's. Ended up getting alignment done the same day. As others have mentioned, toe was way out of spec.

02-01-2014, 08:27 AM	#10
utekineir blowhard Join Date: Jun 2013 Drives: frs, project forester Location: ma Posts: 980 Thanks: 53 Thanked 604 Times in 316 Posts Mentioned: 5 Post(s)	What they all said. I put on kwv3 a couple nights ago. Still no alignment (going to diy). But the car wasn't driven till a quick toe/camber check. I actually came up good on toe using a quick and dirty tape measure method. Car has been driving great, but I need to do a better check. Going to get a couple 2x12" s today, build wheel platforms (with room for sliding tiles) and try get a better look. Also grabbed 16 $8 scales from Walmart, the platforms are going to be made with a foot at each corner to work on the scales.

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