Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.

rough ride and jerky braking

simonbarton
Newbie
Newbie
Posts: 3
Joined: Wed May 22, 2019 8:56 pm

rough ride and jerky braking

Post by simonbarton » Wed May 22, 2019 9:01 pm

Been driving my new Z4 for around a month now and have to say its the roughest car I have even driven. The auto gearbox lurches down the gears when slowing down making the ride very jerky. Even worse is the braking system: try as I may i cannot get this car to come to a halt without coming to a stuttering halt that throws my head back into the headrest.
Going back to dealer next week but would be interested to hear if anyone else is experiencing similar glitches???

Zoomer
Senior Member
Senior Member
Posts: 1115
Joined: Tue Jul 08, 2014 10:14 pm
Location: Staffordshire Moorlands

rough ride and jerky braking

Post by Zoomer » Wed May 22, 2019 9:08 pm

Sorry to hear you are having issues. I’ve had auto BMWs and to be honest I think they are one the best gearboxes around. Are you running in sport modes or standard .
Sterling Grey 3.0i E85 Black Heated Leather M sports seats , 224's ,Sat Nav, Bluetooth, Xenons, PDC, Gaptech ,Cruise and a nice warm garage. NOW GONE
Silver 3.0i Z4 NOW GONE

User avatar
buzyg
Legend
Legend
Posts: 26421
Joined: Fri May 20, 2011 6:11 pm
Location: Cornwall

rough ride and jerky braking

Post by buzyg » Wed May 22, 2019 10:46 pm

Welcome to the forum. Hope you get it sorted.
Image

User avatar
dr_john
Lifer
Lifer
Posts: 3401
Joined: Sat Dec 03, 2011 4:20 pm
Location: Barrow Upon Soar

rough ride and jerky braking

Post by dr_john » Thu May 23, 2019 1:21 am

Picking up my new G29 in a few days, I didn’t notice that sort of behaviour at all on the test drive.

Also had an E89 auto, no probs.
Sapphire Black G29 2.0 MSport with Technology pack

NewZdriver
Member
Member
Posts: 106
Joined: Mon Mar 25, 2019 7:57 pm

rough ride and jerky braking

Post by NewZdriver » Thu May 23, 2019 9:38 am

It gets a bit jerky in sport plus mode cos the change pattern is altered. I really like what it does, but in comfort mode it’s incredibly smooth unless you have an issue with the box. As for the brakes, can’t fault them
2015 Z4 e89 1.8i
2017 Z4 e89 2.0i msport auto
2019 Z4 g29 2.0i sport auto (rejected)
2019 ‘69’ Z4 g29 2.0i sport auto (comfort pack / 19” alloys)

2017 118d sport auto F20
2018 320d msport auto F30
2020 520d msport auto G30

Capa
Member
Member
Posts: 250
Joined: Mon Oct 16, 2017 4:02 pm
Location: Southampton

rough ride and jerky braking

Post by Capa » Thu May 23, 2019 11:36 am

Sounds like it's worth taking it to the dealer and reporting your findings.

I'd caveat that with asking what you're used to? If you've had some magic-carpet like Bentley beforehand then yes, it'll be a shock to the system.
E86 | Stratus Grey

User avatar
Player 1
Member
Member
Posts: 322
Joined: Sat Aug 09, 2014 9:34 pm
Location: Cornwall

rough ride and jerky braking

Post by Player 1 » Thu May 23, 2019 12:12 pm

As above, it possibly depends on what you've come from?
The gearbox in the G29 I drove was perfectly smooth, the brakes are a big step up from the standard E89 brakes so could take a bit of getting used to.
Image

Online
john-e89
Lifer
Lifer
Posts: 11024
Joined: Tue Feb 10, 2015 10:27 pm

rough ride and jerky braking

Post by john-e89 » Thu May 23, 2019 7:52 pm

Yep another one I have to say the M40i I tried was spot on with gear changes and brakes, no issues.

Hope you find a solution fella.
M roady...OEM CSL’s, strut brace, Remus back boxes, ZHP
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
G29

simonbarton
Newbie
Newbie
Posts: 3
Joined: Wed May 22, 2019 8:56 pm

rough ride and jerky braking

Post by simonbarton » Thu May 30, 2019 9:11 am

I drive an E class Estate (18 plate) as well. Previously drove Mazda MX5 FR (manual). I drive in comfort mode so wouldn't expect jerky ride!!
Both the above cars ran and braked much more smoothly that the Z4. Read a review from Whatcar and it did say braking was not particularly smooth.
Back to dealership today so will update...Cheers for the interest :)

User avatar
dr_john
Lifer
Lifer
Posts: 3401
Joined: Sat Dec 03, 2011 4:20 pm
Location: Barrow Upon Soar

rough ride and jerky braking

Post by dr_john » Thu May 30, 2019 10:07 pm

Only had my G29 2 days, love it, but I did notice that braking is a tad sharp. The lightest touch on the pedal and it brakes quite hard.

I put it down to 'newness' with the hope that the brakes will bed in or I will get used to it.

Can't fault the gearbox although so far I haven't used the manual mode.
Sapphire Black G29 2.0 MSport with Technology pack

Online
john-e89
Lifer
Lifer
Posts: 11024
Joined: Tue Feb 10, 2015 10:27 pm

rough ride and jerky braking

Post by john-e89 » Fri May 31, 2019 3:48 pm

dr_john wrote: Thu May 30, 2019 10:07 pm Only had my G29 2 days, love it, but I did notice that braking is a tad sharp. The lightest touch on the pedal and it brakes quite hard.

I put it down to 'newness' with the hope that the brakes will bed in or I will get used to it.

Can't fault the gearbox although so far I haven't used the manual mode.
:roll: Doc..do I really have to post this after all your time on here...?? :poke:


:worthless: :worthless:
M roady...OEM CSL’s, strut brace, Remus back boxes, ZHP
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
G29

User avatar
dr_john
Lifer
Lifer
Posts: 3401
Joined: Sat Dec 03, 2011 4:20 pm
Location: Barrow Upon Soar

rough ride and jerky braking

Post by dr_john » Fri May 31, 2019 6:06 pm

john-e89 wrote: Fri May 31, 2019 3:48 pm
:roll: Doc..do I really have to post this after all your time on here...?? :poke:


:worthless: :worthless:
:rofl: :rofl: :rofl:

Fair enough John, I’ll sort it!
Sapphire Black G29 2.0 MSport with Technology pack

gusTaco
Member
Member
Posts: 114
Joined: Sat Jul 21, 2018 12:22 am

rough ride and jerky braking

Post by gusTaco » Fri May 31, 2019 9:06 pm

simonbarton wrote: Wed May 22, 2019 9:01 pm Been driving my new Z4 for around a month now and have to say its the roughest car I have even driven. The auto gearbox lurches down the gears when slowing down making the ride very jerky. Even worse is the braking system: try as I may i cannot get this car to come to a halt without coming to a stuttering halt that throws my head back into the headrest.
Going back to dealer next week but would be interested to hear if anyone else is experiencing similar glitches???
I have a G29 Z4 for the next 24 hours, courtesy of BMW as I am (was?) seriously considering part exchanging my E89 and purchase the new one.

I too am having similar issues, especially with the braking and rough suspension. It could be the M sport adaptive suspension, which feels way rougher than the non M Sport suspension in the E89.

User avatar
dr_john
Lifer
Lifer
Posts: 3401
Joined: Sat Dec 03, 2011 4:20 pm
Location: Barrow Upon Soar

rough ride and jerky braking

Post by dr_john » Sat Jun 01, 2019 12:08 pm

OK, here we go:-
DSCN1191.JPG
DSCN1191.JPG (219.92 KiB) Viewed 3665 times
DSCN1189.JPG
DSCN1189.JPG (197.3 KiB) Viewed 3665 times
DSCN1187.JPG
DSCN1187.JPG (320.41 KiB) Viewed 3665 times
:D
Sapphire Black G29 2.0 MSport with Technology pack

User avatar
dr_john
Lifer
Lifer
Posts: 3401
Joined: Sat Dec 03, 2011 4:20 pm
Location: Barrow Upon Soar

rough ride and jerky braking

Post by dr_john » Sat Jun 01, 2019 12:44 pm

Back on topic, I've found that the brakes need only a gentle touch, any more and the braking is quite severe.

I did notice some vibration and steering issues yesterday and then discovered that I have Land Departure Warning which occurs when crossing a white line at speed, unless the indicators are used. I didn't know that I had got it! It can only be turned off for the duration of the current journey.
Sapphire Black G29 2.0 MSport with Technology pack

Post Reply