Torque Steer ?

BigBanana · 12-09-2016, 08:43 AM

Had my winter tyres re-fitted this week. (Wintract Extreme).
One was damaged so replaced it with a brand new one.
The others have approx 5mm tread left.

Now found when accelerating hard, I have to gradually steer left until I change gear.
I had the new tyre fitted on the rear (thinking more tread, better traction in snow etc), but now think that was a mistake.

Anyone experienced similar?

teaston · 12-09-2016, 08:47 AM

Torque steer only affects front wheel drive cars.

creepy coupe · 12-09-2016, 09:02 AM

Are you confusing tramlining with TS?

BigBanana · 12-09-2016, 09:30 AM

Rather unconventional use of the phrase ‘torque steer’, I know….

But the car ‘veers’ to the left during hard acceleration.
I’m suspecting the diff is tightening under high torque conditions and the larger diameter wheel is causing that side of the car to be slightly faster.
Hence my phrase ‘Torque Steer’

The diff should look after the difference but there’s probably a limit to everything.
I’ve expereienced tramlining before and its not that.
I’ll get the wheel with the new tyre swapped with a front at the weekend and try again.

robbiep · 12-09-2016, 09:44 AM

Personally, I'd have changed the pair of tyres on the back, so that they had equal tread depth. I've always felt that having different tread depths on the driven axle leads to component wear.
Not sure what BMW say about it these days, but pretty sure they used to say to swap as pairs.

Torque of the Devil · 12-09-2016, 10:13 AM

Could be the weight of your Banana causing the problem.

GEP77 · 12-09-2016, 10:37 AM

With uneven traction from side to side it is possible to induce what feels very like conventional torque steer in an xdrive. I've encountered this numerous times on wet and greasy surfaces. However on the same road when its dry performing the same manoeuvre there is no detrimental feedback through the steering.

In a rear wheel drive car the rear end would twitch/slide about in the same circumstances.

Drew474 · 12-09-2016, 12:28 PM

Tyre pressures! I blew two tyres on my old motor (120d xdrive) and had what you described. Redone all tyre pressures and it ran perfectly again.

willjames · 12-09-2016, 12:29 PM

Quote:

Originally Posted by Vanguard

Could be the weight of your Banana causing the problem.

BigBanana · 12-09-2016, 03:01 PM

I'll check the tyre pressures first thing tomorrow.
As for the Banana, i've got a bunch of them to choose from and just picked the biggest

The tyre place also did a 'free' wheel alignment, which didn't go well.
I hope its nothing to do with that...

pienchips · 12-09-2016, 04:05 PM

Also just to add, check the tyre has been fitted the right way round. Also grip level on the new tyre will be lower for the first few hundred miles or so.

HighlandPete · 12-09-2016, 04:05 PM

Quote:

Originally Posted by BigBanana

I'll check the tyre pressures first thing tomorrow.
As for the Banana, i've got a bunch of them to choose from and just picked the biggest

The tyre place also did a 'free' wheel alignment, which didn't go well.
I hope its nothing to do with that...

'Free' wheel alignment and decent 'geo' settings don't usually go together. Don't be surprised if that free alignment (often mis-alignment) is involved in any strange steering feel you have.

BTW, it won't be the diff limiting the straight line feel. If it is tyres, more likely the difference in grip levels. Remember cold weather tyres do need a few miles to get to full grip.

G82Dude · 12-09-2016, 06:15 PM

Quote:

Originally Posted by teaston

Torque steer only affects front wheel drive cars.

...or possibly those with four wheel drive if power is shifted to the front!

teaston · 12-09-2016, 07:51 PM

Quote:

Originally Posted by BigBanana

I'll check the tyre pressures first thing tomorrow.
As for the Banana, i've got a bunch of them to choose from and just picked the biggest

The tyre place also did a 'free' wheel alignment, which didn't go well.
I hope its nothing to do with that...

If tyre pressures don't sort it then it is almost definitely the wheel alignment! Take it somewhere with a Hunter wheel alignment machine, they usually do a free check.

TouringPleb · 12-09-2016, 11:37 PM

Quote:

Originally Posted by BigBanana

I'll check the tyre pressures first thing tomorrow.
As for the Banana, i've got a bunch of them to choose from and just picked the biggest

The tyre place also did a 'free' wheel alignment, which didn't go well.
I hope its nothing to do with that...

Think you've answered your own question there...

snipnoob86 · 12-10-2016, 04:46 AM

the xdrive does give a torque steer feeling I have noticed. but it is actually following cambers and rivets in the road. made worse under acceleration on uneven surfaces. I know this doesn't answer your problem as it's mostly un noticeable so.

RobUK · 12-10-2016, 08:10 AM

Used to own a Renault 5 GT Turbo.... now that had torque steer!

BigBanana · 12-10-2016, 10:04 AM

Tyre pressures were ok.

Swapping the wheels front to back has fixed it.
Whether it was the larger diameter of the new tyre or lower grip, I'll never know.

But I won't be doing that again...
Now. Where's that bunch of bananas gone?
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firewallguy · 12-11-2016, 05:32 AM

Quote:

Originally Posted by RobUK

Used to own a Renault 5 GT Turbo.... now that had torque steer!

Especially if it's had a remapped VAG 2.0 Turbo dropped in it like my mate did once. I could barely keep it in the same lane when I floored it

BigBanana · 12-11-2016, 04:02 PM

300 horse and more torque than the clutch can handle, can be fun in a manual RWD.

12-09-2016, 08:43 AM	#1
BigBanana Lieutenant 81 Rep 427 Posts Drives: Beemer F30 335D Join Date: Jul 2007 Location: Staffordshire iTrader: (0)	Torque Steer ? Had my winter tyres re-fitted this week. (Wintract Extreme). One was damaged so replaced it with a brand new one. The others have approx 5mm tread left. Now found when accelerating hard, I have to gradually steer left until I change gear. I had the new tyre fitted on the rear (thinking more tread, better traction in snow etc), but now think that was a mistake. Anyone experienced similar? __________________ F30 Estoril Blue 335D MSport.
	Appreciate 1 kzg19691299.00 Tweet Quote

12-09-2016, 08:47 AM	#2
teaston Banned 10995 Rep 32,881 Posts Drives: X3 M40d Join Date: May 2012 Location: The High Seas iTrader: (1)	Torque steer only affects front wheel drive cars.
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12-09-2016, 09:02 AM	#3
creepy coupe Lieutenant General 1867 Rep 13,043 Posts Drives: BMW M340I G20 Join Date: Aug 2007 Location: UK iTrader: (2) Garage List 2015 BMW 435d [0.00] 2009 335i [0.00]	Are you confusing tramlining with TS? __________________ -------------------------------------------------------------- Current car.M240i. Previous.MINI JCW. E92 325i. 435d M235i.M135i. 635d Coupe, E92 M3 manual, E92 M3 DCT Competition Pack. E92 335i, Porsche Cayman S Gen2, 135i Coupe. E92 320d, MK5 R32. MK5 Golf GTi,MK5 Golf GT-TDI,E46 318Ci.
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12-09-2016, 09:30 AM	#4
BigBanana Lieutenant 81 Rep 427 Posts Drives: Beemer F30 335D Join Date: Jul 2007 Location: Staffordshire iTrader: (0)	Rather unconventional use of the phrase ‘torque steer’, I know…. But the car ‘veers’ to the left during hard acceleration. I’m suspecting the diff is tightening under high torque conditions and the larger diameter wheel is causing that side of the car to be slightly faster. Hence my phrase ‘Torque Steer’ The diff should look after the difference but there’s probably a limit to everything. I’ve expereienced tramlining before and its not that. I’ll get the wheel with the new tyre swapped with a front at the weekend and try again. __________________ F30 Estoril Blue 335D MSport.
	Appreciate 0 Quote

12-09-2016, 09:44 AM	#5
robbiep Brigadier General 1983 Rep 3,216 Posts Drives: VW e-Golf ! Join Date: Dec 2013 Location: North Wales, UK iTrader: (0)	Personally, I'd have changed the pair of tyres on the back, so that they had equal tread depth. I've always felt that having different tread depths on the driven axle leads to component wear. Not sure what BMW say about it these days, but pretty sure they used to say to swap as pairs.
	Appreciate 0 Quote

12-09-2016, 10:13 AM	#6
Torque of the Devil Banned 579 Rep 1,148 Posts Drives: 440i Gran Coupe Join Date: May 2013 Location: Hampshire, UK iTrader: (0)	Could be the weight of your Banana causing the problem.
	Appreciate 1 Edinburra546.50 Quote

12-09-2016, 10:37 AM	#7
GEP77 Major 409 Rep 1,162 Posts Drives: Tesla Model 3 Long Range. Join Date: Nov 2013 Location: South East London iTrader: (1)	With uneven traction from side to side it is possible to induce what feels very like conventional torque steer in an xdrive. I've encountered this numerous times on wet and greasy surfaces. However on the same road when its dry performing the same manoeuvre there is no detrimental feedback through the steering. In a rear wheel drive car the rear end would twitch/slide about in the same circumstances.
	Appreciate 0 Quote

12-09-2016, 12:28 PM	#8
Drew474 Private First Class 45 Rep 109 Posts Drives: M340i xdrive Join Date: Oct 2015 Location: Stirling iTrader: (0)	Tyre pressures! I blew two tyres on my old motor (120d xdrive) and had what you described. Redone all tyre pressures and it ran perfectly again.
	Appreciate 0 Quote

12-09-2016, 03:01 PM	#10
BigBanana Lieutenant 81 Rep 427 Posts Drives: Beemer F30 335D Join Date: Jul 2007 Location: Staffordshire iTrader: (0)	I'll check the tyre pressures first thing tomorrow. As for the Banana, i've got a bunch of them to choose from and just picked the biggest The tyre place also did a 'free' wheel alignment, which didn't go well. I hope its nothing to do with that... __________________ F30 Estoril Blue 335D MSport.
	Appreciate 0 Quote

12-09-2016, 04:05 PM	#11
pienchips First Lieutenant 177 Rep 365 Posts Drives: Polestar 2 PPP Join Date: Dec 2015 Location: North Staffordshire iTrader: (0)	Also just to add, check the tyre has been fitted the right way round. Also grip level on the new tyre will be lower for the first few hundred miles or so.
	Appreciate 0 Quote

12-10-2016, 04:46 AM	#16
snipnoob86 Major 288 Rep 1,201 Posts Drives: 335D Saloon Join Date: Feb 2015 Location: Manchester iTrader: (0)	the xdrive does give a torque steer feeling I have noticed. but it is actually following cambers and rivets in the road. made worse under acceleration on uneven surfaces. I know this doesn't answer your problem as it's mostly un noticeable so.
	Appreciate 0 Quote

12-10-2016, 08:10 AM	#17
RobUK Brigadier General 2812 Rep 4,935 Posts Drives: 340i MPPSK Join Date: Jun 2012 Location: Sussex, N.Yorks, UK iTrader: (0) Garage List 2015 340i MPPSK [0.00] 2001 Yamaha FZS1000 [0.00]	Used to own a Renault 5 GT Turbo.... now that had torque steer! __________________ Life is a state of mind
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12-10-2016, 10:04 AM	#18
BigBanana Lieutenant 81 Rep 427 Posts Drives: Beemer F30 335D Join Date: Jul 2007 Location: Staffordshire iTrader: (0)	Tyre pressures were ok. Swapping the wheels front to back has fixed it. Whether it was the larger diameter of the new tyre or lower grip, I'll never know. But I won't be doing that again... Now. Where's that bunch of bananas gone? __________________ F30 Estoril Blue 335D MSport.
	Appreciate 0 Quote

12-11-2016, 04:02 PM	#20
BigBanana Lieutenant 81 Rep 427 Posts Drives: Beemer F30 335D Join Date: Jul 2007 Location: Staffordshire iTrader: (0)	300 horse and more torque than the clutch can handle, can be fun in a manual RWD. __________________ F30 Estoril Blue 335D MSport.
	Appreciate 0 Quote