Rear shaking - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

brzboy · 06-10-2019, 08:24 PM

When turning from a dead stop left for right the rear end shakes a little until i speed up or straiten it out is that normal for the rear differential ? It’s got about 26k miles on it. 2016

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HKz · 06-10-2019, 08:32 PM

if your tires are properly balanced then my bet is this be just normal operation of your Torsen limited slip diff..

brzboy · 06-10-2019, 08:33 PM

Quote:

Originally Posted by HKz

if your tires are properly balanced then my bet is this be just normal operation assuming of your Torsen limited slip diff..

The only thing done to the rear is wheel spacers

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brzboy · 06-10-2019, 08:33 PM

I’ve read other people have experienced this just wondering if it is “normal”?

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Spuds · 06-10-2019, 08:41 PM

Quote:

Originally Posted by brzboy

I’ve read other people have experienced this just wondering if it is “normal”?

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Yes.

Mr.ac · 06-10-2019, 08:59 PM

Yeah any difference on tires can upset the lsd.
Could be one tire could be low on air. Check both rears tire pressure.
In few cases very rare a bad wheel bearing is the culprit.

brzboy · 06-10-2019, 09:03 PM

Quote:

Originally Posted by Mr.ac

Yeah any difference on tires can upset the lsd.
Could be one tire could be low on air. Check both rears tire pressure.
In few cases very rare a bad wheel bearing is the culprit.

If they are the same would it still be normal?

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brzboy · 06-10-2019, 09:10 PM

All tires are at 34psi

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Turdinator · 06-10-2019, 09:46 PM

How quickly are you taking off? If you are close to the grip limit but not going hard enough to spin or are on crappy tires or slippery roads it can do that.

brzboy · 06-10-2019, 09:49 PM

Quote:

Originally Posted by Turdinator

How quickly are you taking off? If you are close to the grip limit but not going hard enough to spin or are on crappy tires or slippery roads it can do that.

The tires are the stock tires they are extremely hard, very easy to slide in but not taking off fast at all

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Ultramaroon · 06-10-2019, 09:58 PM

If I'm turning tightly in either direction with just a bit of torque the diff will chatter just like my brother's 911.

It's totally cool.

Mr.ac · 06-10-2019, 10:59 PM

Quote:

Originally Posted by brzboy

If they are the same would it still be normal?

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Yes. Not a lot but noticeable.

brzboy · 06-10-2019, 11:19 PM

Quote:

Originally Posted by Ultramaroon

If I'm turning tightly in either direction with just a bit of torque the diff will chatter just like my brother's 911.

It's totally cool.

What do you mean clatter ?

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Ultramaroon · 06-10-2019, 11:27 PM

Quote:

Originally Posted by brzboy

What do you mean clatter ?

Chatter. It's more of a clutch-type lsd thing but the diff mounts in the 86 are mushy.

Just try not to punch it unless you mean to do a donut. If you coast through the turn, even better.

06-10-2019, 08:24 PM	#1
brzboy Member Join Date: Jun 2019 Drives: 2016 brz limited Location: Murphy no Posts: 33 Thanks: 15 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Rear shaking When turning from a dead stop left for right the rear end shakes a little until i speed up or straiten it out is that normal for the rear differential ? It’s got about 26k miles on it. 2016 Sent from my iPhone using Tapatalk

06-10-2019, 08:59 PM	#6
Mr.ac [insert cool phrase here] Join Date: Aug 2015 Drives: BRZ Premium Location: Central Coast CA Posts: 2,369 Thanks: 709 Thanked 1,558 Times in 930 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	Yeah any difference on tires can upset the lsd. Could be one tire could be low on air. Check both rears tire pressure. In few cases very rare a bad wheel bearing is the culprit. __________________ New daily driver - Subaru BRZ Premium Weekend fun/track car - '91 MR2 Turbo Gen3 Old daily driver - '88 MR2 Supercharged

06-10-2019, 09:58 PM	#11
Ultramaroon 義理チョコ Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,865 Thanks: 52,120 Thanked 36,513 Times in 18,917 Posts Mentioned: 1106 Post(s) Tagged: 9 Thread(s)	If I'm turning tightly in either direction with just a bit of torque the diff will chatter just like my brother's 911. It's totally cool. __________________ service manuals

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06-10-2019, 08:32 PM	#2
HKz Reformed Join Date: Sep 2014 Drives: '23 GRC, '11 Prius, '04 RAV4 Location: Mesa, AZ Posts: 1,312 Thanks: 1,234 Thanked 1,133 Times in 588 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	if your tires are properly balanced then my bet is this be just normal operation of your Torsen limited slip diff..

06-10-2019, 08:33 PM	#4
brzboy Member Join Date: Jun 2019 Drives: 2016 brz limited Location: Murphy no Posts: 33 Thanks: 15 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I’ve read other people have experienced this just wondering if it is “normal”? Sent from my iPhone using Tapatalk

06-10-2019, 09:10 PM	#8
brzboy Member Join Date: Jun 2019 Drives: 2016 brz limited Location: Murphy no Posts: 33 Thanks: 15 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	All tires are at 34psi Sent from my iPhone using Tapatalk

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