I slip my rear tires on a daily basis.... - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Laika · 07-25-2012, 08:52 PM

And it's hilarious! My family insists that some part of my car is scraping on the driveway when I pull in and I thought that too until the second time when I actively noticed the noise coming from the rear. Lately the traction light has been coming on now too. I'm going to replace the VSC/Sport button with a "Driveway mode" button

[ame="http://www.youtube.com/watch?v=1SfGmM1sbu0&feature=plcp"]Subaru BRZ torsen LSD in action - YouTube[/ame]

I'd probably be worried about wearing out my rear left tire prematurely if I didn't slip the tires elsewhere anyways.

sho220 · 07-25-2012, 09:15 PM

Mine does the same thing leaving the entrance at work...every time...

Draco-REX · 07-25-2012, 09:29 PM

Torque-sensing (torsen) diffs do that. If one tire is in the air the diff is essentially open. But if the spinning tire has even a little bit of grip, the diff will lock up and get you moving.

Laika · 07-25-2012, 09:51 PM

Quote:

Originally Posted by Draco-REX

Torque-sensing (torsen) diffs do that. If one tire is in the air the diff is essentially open. But if the spinning tire has even a little bit of grip, the diff will lock up and get you moving.

Hmm interesting, I didn't know about that. I don't know if the title of my video shows up but I was aware that it had to do with the Torsen LSD

OrbitalEllipses · 07-25-2012, 10:03 PM

Quote:

Originally Posted by Laika

Hmm interesting, I didn't know about that. I don't know if the title of my video shows up but I was aware that it had to do with the Torsen LSD

That's why racers consider clutch type/mechanical differentials vastly superior: they never act as open diffs, even with a wheel in the air.

Draco-REX · 07-25-2012, 10:15 PM

Quote:

Originally Posted by OrbitalEllipses

That's why racers consider clutch type/mechanical differentials vastly superior: they never act as open diffs, even with a wheel in the air.

But OEMs use sealed viscous units or torsen diffs because their maintenance is nearly the same as an open diff and won't require special oil additives.

OrbitalEllipses · 07-25-2012, 10:17 PM

And they're not as noisy or problematic at low speeds/parking lots.

Draco-REX · 07-25-2012, 10:21 PM

Quote:

Originally Posted by OrbitalEllipses

And they're not as noisy or problematic at low speeds/parking lots.

No kidding. My tow vehicle is an Ambulance. Those have clutch type LSDs for snow traction. Ever hear a 1-ton LSD in a tight turn? Sounds like someone wailing on the axle with a sledgehammer.

Wes · 07-25-2012, 11:22 PM

dude my car does that all the time when i reverse in my garage, at first i thought it scraped til i found out it was the tire spinning

ranisron · 07-26-2012, 12:35 AM

Try welded diff :-)

pr086 · 07-27-2012, 06:30 PM

it didnt look like 1 wheel was in the air in this vid, what would cause it to slip like that at such a low speed?

sbxjap · 07-27-2012, 06:56 PM

Quote:

Originally Posted by pr086

it didnt look like 1 wheel was in the air in this vid, what would cause it to slip like that at such a low speed?

Maybe gravel? Dunno....

sandman126 · 07-27-2012, 07:22 PM

Quote:

Originally Posted by ranisron

Try welded diff :-)

Haha did that on my old suzuki samurai, tires chirped around every turn

OrbitalEllipses · 07-27-2012, 08:22 PM

Quote:

Originally Posted by sbxjap

Maybe gravel? Dunno....

Gravel. No traction under that tire because the surface of the road (gravel) moves as the tire spins.

07-25-2012, 08:52 PM	#1
Laika When In Doubt... Join Date: May 2011 Drives: Slowww Location: PA215 Posts: 1,844 Thanks: 1,023 Thanked 752 Times in 412 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	I slip my rear tires on a daily basis.... And it's hilarious! My family insists that some part of my car is scraping on the driveway when I pull in and I thought that too until the second time when I actively noticed the noise coming from the rear. Lately the traction light has been coming on now too. I'm going to replace the VSC/Sport button with a "Driveway mode" button [ame="http://www.youtube.com/watch?v=1SfGmM1sbu0&feature=plcp"]Subaru BRZ torsen LSD in action - YouTube[/ame] I'd probably be worried about wearing out my rear left tire prematurely if I didn't slip the tires elsewhere anyways. __________________ Join the Galaxy Blue Silica BRZ registry below: https://docs.google.com/spreadsheet/...2c&usp=sharing

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07-25-2012, 09:15 PM	#2
sho220 Senior Member Join Date: Jun 2012 Drives: FR-S MT & FJ Cruiser Location: Northern Virginia Posts: 1,107 Thanks: 292 Thanked 653 Times in 316 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Mine does the same thing leaving the entrance at work...every time...

07-25-2012, 09:29 PM	#3
Draco-REX Corner Junkie Join Date: Feb 2012 Drives: 13 BRZ, 11 STI, 99 RS Location: Ohio Posts: 2,908 Thanks: 129 Thanked 1,520 Times in 702 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Torque-sensing (torsen) diffs do that. If one tire is in the air the diff is essentially open. But if the spinning tire has even a little bit of grip, the diff will lock up and get you moving.

07-25-2012, 10:17 PM	#7
OrbitalEllipses Banned Join Date: Jan 2012 Drives: Attitude Location: MD Posts: 10,046 Thanks: 884 Thanked 4,889 Times in 2,902 Posts Mentioned: 123 Post(s) Tagged: 4 Thread(s)	And they're not as noisy or problematic at low speeds/parking lots.

07-25-2012, 11:22 PM	#9
Wes Senior Member Join Date: May 2012 Drives: JRSC'd Asphalt FR-S Location: SoCal Posts: 1,317 Thanks: 868 Thanked 436 Times in 260 Posts Mentioned: 9 Post(s) Tagged: 1 Thread(s)	dude my car does that all the time when i reverse in my garage, at first i thought it scraped til i found out it was the tire spinning

07-26-2012, 12:35 AM	#10
ranisron Member Join Date: Feb 2012 Drives: 2013 SWP BRZ Limited #2344 Location: Chicago, IL, Wheaton, IL Posts: 88 Thanks: 110 Thanked 14 Times in 11 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Try welded diff :-)

07-27-2012, 06:30 PM	#11
pr086 Senior Member Join Date: May 2012 Drives: fast Location: US Posts: 325 Thanks: 1 Thanked 26 Times in 21 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	it didnt look like 1 wheel was in the air in this vid, what would cause it to slip like that at such a low speed?

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