Juddering when turn sharply

Nomana · 04-18-2016, 04:45 PM

Hello
I noticed some small shake when I turn my F32 sharply (full turn) at slow speed. I drove off my driveway and felt the small vibration like i drove over small bump but disappeared when pull the wheel back. Then I tried it on even pavement and I still felt it.

I think this might happened for some time or since i got the car but never notice because it's very small judder and you can feel it only with very slow speed.

Stock wheels, suspension.
Is it normal?

Nomana · 06-11-2016, 03:36 AM

Anybody?
It feels like wheel hop and losing traction.

COKen · 06-11-2016, 07:31 AM

If you are not seeing any abnormal tire wear then I wouldn't worry about it. At full lock the suspension geometry is at its extreme and the drive wheels are pushing on the front wheels at an angle. The tire in the direction you are turning must be at a greater angle than the tire on the outside. They will be following two very different arcs (the inside arc will be smaller than the outside arc). This could cause one tire to slip a bit as you move forward. I have seen this on many of my cars. You may even notice it to a greater extend when backing up with wheels at full lock.

goj · 06-11-2016, 10:23 AM

Also if you have summer tires, if the temps get below 50 at night and hold for a few hours the tires can get hard and you'd feel it at extreme wheel angles.

This occurs with Pirelli p-zeros on my dads 911. In the Bay Area the climate is very moderate.

Is your car on P-Zeros? It's likely a combination of hard tires and the extreme angle they're at

eluded · 06-12-2016, 01:58 AM

i feel the same thing with my BMW when backing out of my driveway. My Toyota used to do the same thing and when i brought in for alignment, they said some screws were loose. I said, i know i'm a little crazy but that is kind of rude to say, but then he explained, no not that, some of the suspension bolts were loose that you use for alignment. The person that aligned the car previously did not tighten them down and it's a good thing you came in.

daac · 08-31-2018, 08:37 PM

some what related to this i was on a test drive earlier today. f30 2014 xdrive 335i msport auto 52000km. When in sport and sport + mode when shifting manually full throttle at higher revs in a straight line when the next gear engaged i felt a judder in my seat and short loss of power. The car then takes off like a rocket but it just doesn't seem normal. First happened on the freeway at like 80kmh when it was raining so came today to try in the dry in case it was wheel slip and traction control and same thing. Especially noticed on 1-2 shifts in the dry. Needless to say i did not buy it but im curious if this is normal. Possible xdrive issue?

04-18-2016, 04:45 PM	#1
Nomana Lieutenant Colonel 1466 Rep 1,637 Posts Drives: BMW Join Date: Sep 2014 Location: SN iTrader: (0)	Hello I noticed some small shake when I turn my F32 sharply (full turn) at slow speed. I drove off my driveway and felt the small vibration like i drove over small bump but disappeared when pull the wheel back. Then I tried it on even pavement and I still felt it. I think this might happened for some time or since i got the car but never notice because it's very small judder and you can feel it only with very slow speed. Stock wheels, suspension. Is it normal?
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06-11-2016, 03:36 AM	#2
Nomana Lieutenant Colonel 1466 Rep 1,637 Posts Drives: BMW Join Date: Sep 2014 Location: SN iTrader: (0)	Anybody? It feels like wheel hop and losing traction.
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06-11-2016, 07:31 AM	#3
COKen Lieutenant Colonel 981 Rep 1,560 Posts Drives: M Rster / Z4 M40i / X5 M50i Join Date: Dec 2013 Location: Colorado iTrader: (0)	If you are not seeing any abnormal tire wear then I wouldn't worry about it. At full lock the suspension geometry is at its extreme and the drive wheels are pushing on the front wheels at an angle. The tire in the direction you are turning must be at a greater angle than the tire on the outside. They will be following two very different arcs (the inside arc will be smaller than the outside arc). This could cause one tire to slip a bit as you move forward. I have seen this on many of my cars. You may even notice it to a greater extend when backing up with wheels at full lock. __________________ 2002 M Roadster, Steel Gray Metailic, Gray Nappa Leather, HT, TC Kline DA Shocks & Camber Plates, w/H&R Springs, Stromung Exhaust, SSR Type C. Looking for new home. 2022 Z4 M40i, Misano Blue Metallic, Driver Asst Pkg, Prem Pkg 2023 X5 M50i, Phytonic Blue, Black Extended Merion Leather, Driving Asst Pro Pkg, Park Asst Pkg, Exec Pkg, Climate Comfort Pkg.
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06-11-2016, 10:23 AM	#4
goj Brigadier General 2253 Rep 3,622 Posts Drives: 2016 EBII 340i 6-MT Join Date: Aug 2015 Location: Bay Area, CA iTrader: (0)	Also if you have summer tires, if the temps get below 50 at night and hold for a few hours the tires can get hard and you'd feel it at extreme wheel angles. This occurs with Pirelli p-zeros on my dads 911. In the Bay Area the climate is very moderate. Is your car on P-Zeros? It's likely a combination of hard tires and the extreme angle they're at __________________ BMW CCA Member #516012 2016 340i, Estoril Blue, Manual Transmission, MPE, MPBBK, HRE FF04 Instagram: @brandons340i
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06-12-2016, 01:58 AM	#5
eluded 2JZ-GTE 3042 Rep 3,996 Posts Drives: 340 6MT, 50e, others Join Date: Nov 2015 Location: Sofia iTrader: (0)	i feel the same thing with my BMW when backing out of my driveway. My Toyota used to do the same thing and when i brought in for alignment, they said some screws were loose. I said, i know i'm a little crazy but that is kind of rude to say, but then he explained, no not that, some of the suspension bolts were loose that you use for alignment. The person that aligned the car previously did not tighten them down and it's a good thing you came in. __________________ A man who views the world the same at 50 as he did at 20 has wasted 30 years of his life.
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08-31-2018, 08:37 PM	#6
daac Private 23 Rep 77 Posts Drives: 2016 340i Xdrive Msport Join Date: Aug 2018 Location: Vancouver iTrader: (0)	some what related to this i was on a test drive earlier today. f30 2014 xdrive 335i msport auto 52000km. When in sport and sport + mode when shifting manually full throttle at higher revs in a straight line when the next gear engaged i felt a judder in my seat and short loss of power. The car then takes off like a rocket but it just doesn't seem normal. First happened on the freeway at like 80kmh when it was raining so came today to try in the dry in case it was wheel slip and traction control and same thing. Especially noticed on 1-2 shifts in the dry. Needless to say i did not buy it but im curious if this is normal. Possible xdrive issue?
	Appreciate 0 Quote