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      08-05-2019, 04:02 PM   #1
Mokujin
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435d xdrive judder

Hi firstly thanks for all the help Iíve had more questions about this car than any of my others!

I have had my 435d drive for about 3 weeks now and have noticed a really light judder, almost like a clutch slip. This only happens at really low revs, mostly noticeable in traffic.

It was a private purchase and so I have no warantee. What I am aware of is that just before I bought it the previous owner replaced the runflats with regular tyres, on the standard rims.

Itís also been remapped if that makes much difference? Are there any common faults? Anything I can do?
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      08-06-2019, 12:42 AM   #2
WillLowe
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Check what sizes have been used with the new tyres. If they are different by more than 1% it can cause issues with the xdrive. Also try resetting the gearbox adaptations. Carly BMW is a useful app for this
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      08-06-2019, 03:05 AM   #3
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Using non star marked tyres on an x-drive would be a no for me.

Personally I'd put the correctly specified run-flat tyres on and hopefully avoid any transmission problems.

Is there any way you could borrow a set of wheels from someone and see whether the judder disappears ?
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      08-06-2019, 03:09 AM   #4
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Quote:
Originally Posted by Sasquartch View Post
Using non star marked tyres on an x-drive would be a no for me.

Personally I'd put the correctly specified run-flat tyres on and hopefully avoid any transmission problems.

Is there any way you could borrow a set of wheels from someone and see whether the judder disappears ?
I think this is an overkill. As long as the circumference of the tires are more or less the same it should be fine.
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      08-06-2019, 04:13 AM   #5
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Quote:
Originally Posted by fantanas View Post
I think this is an overkill. As long as the circumference of the tires are more or less the same it should be fine.
Unfortunately it could well be the tyres and not overkill. Having owned an X5 40d for 2 years its a very common issue with xDrive anything and a few folk have resolved the issue with a simple tyre swap, even though their non BMW approved tyres were a decenet brand to start with.

I did however run budget non runflats on it for a month without issues but others have had issues within days.
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      08-06-2019, 04:28 AM   #6
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Quote:
Originally Posted by Digidick View Post
Unfortunately it could well be the tyres and not overkill. Having owned an X5 40d for 2 years its a very common issue with xDrive anything and a few folk have resolved the issue with a simple tyre swap, even though their non BMW approved tyres were a decenet brand to start with.

I did however run budget non runflats on it for a month without issues but others have had issues within days.
Maybe so. I personally never had issues. I am running non run flat non starred tires for the past 20k miles on my x drive without issues.

The x drive system is usually confused when the tyres have different circumferences or patterns. Why would it have an issue with identical tyres?
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      08-06-2019, 04:32 AM   #7
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It's the rolling radius between front to back on staggered tyres, they can be quite different on some brands. Running a square setup willbe fine as some people do with winter tyres, like I did on my X5 but my summers were approved staggered Dunlop's.

Not everyone gets issues but I think the OP needs to check what's on the car.
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      08-06-2019, 05:39 AM   #8
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Quote:
Originally Posted by fantanas View Post
Maybe so. I personally never had issues. I am running non run flat non starred tires for the past 20k miles on my x drive without issues.

The x drive system is usually confused when the tyres have different circumferences or patterns. Why would it have an issue with identical tyres?
You may well not have had any issues yourself but lots of people have had issues as a quick google search will reveal

Why risk damaging your transfer box just to save a few quid on cheap tyres ? Makes no sense to me.

Personally I think X-drive is an overkill for me full stop as I live in SE England so have always stayed s-drive as I prefer the simplicity and lighter weight. However I don't think there's a choice on x35d.
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      08-06-2019, 10:07 AM   #9
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Quote:
Originally Posted by fantanas View Post
I think this is an overkill. As long as the circumference of the tires are more or less the same it should be fine.
Problem is with non star marked (approved) tyres, you can't prove the RC from tyre data. Nominal dimensions are not necessarily the actual RC. There is a build tolerance within ETRTO and DIN standards which is far wider than the figures BMW use for axle to axle tolerances. Some users will hit on a tyre which works for staggered setups, other users don't.

Pressures are also critical for the correct RC, but how many actually run a test to check how much the front to rear RC variation is, with non approved tyres, on their xDrive?

OP should really identify if the judder is caused by the tyres, before anything else.
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      08-06-2019, 12:02 PM   #10
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No mention in original post of mileage / tyre brand + sizes etc so hard to diagnose really.

Is the juddering only on pulling away or slow steady moving? Might be worth having the universal joint [rubber] and the centre bearing in the driveshaft checked out as if they are worn / perished they can cause vibrations. A common issue on some the rear wheel drive models with a few miles on them.

If its been mapped a great deal depends on how its been driven as to whether the increased torque has accelerated any torque converter / gearbox / transfer box issues. If driven fast but sensibly it should be ok, but if its been a dipstick doing burnouts and many full power launches etc then it may have caused premature wear.

Lots of issues out there caused by poor tyre choices impacting the transfer box, but could be a range of things. Have a look on the US part of the forum for N57 engine as there is a whole database being maintained of these issues.



If anyone doesn't like XDrive there is sofware you can buy called XDelete which lets you run rear wheel drive only managed from a smartphone....but why would you? See here:

https://f30.bimmerpost.com/forums/sh....php?t=1575839


Last edited by Assassin; 08-06-2019 at 12:10 PM..
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      08-06-2019, 05:14 PM   #11
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Check the EGR in your car. A sticky or partially opening egr will cause those symptoms. Or could be a map thats affecting the drive ability.
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      08-10-2019, 05:41 PM   #12
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Hi All,

Sorry for the delay in response life gets in the way.
So the tyres on it are 4x budgets. 255/35/zr19 and 225/40/zr19. Reading all of the posts I have realised he had a puncture in one about 3 months after replacing all the rest and so the front left is out slightly.

The issue I get is an on bobble/judder at slower speeds approx 1500 revs or even when coasting in slow traffic. Itís almost as i have an egg shaped tyre? As speed or during acceleration I have no issues whatsoever. The car doesnít skip a beat otherwise!

What would be the best cause of action? Is there any Bmw specialists near Coventry that Would be able to assist?

I was thinking should I get 4 approved tyres and get tracking etc done to make sure? What would be a good starter tyre to got for?
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      08-17-2019, 09:16 AM   #13
Mokujin
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Hi All,

Update, I took the car in to my local and had tracking and balancing all done. Unfortunately this has not resolved the issue!

Next step is to go get * marked tyres. What is the standard tyre provided by bmw for the 4 series?
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      08-17-2019, 12:00 PM   #14
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Quote:
Originally Posted by Mokujin View Post
Hi All,

Update, I took the car in to my local and had tracking and balancing all done. Unfortunately this has not resolved the issue!

Next step is to go get * marked tyres. What is the standard tyre provided by bmw for the 4 series?
My My15 model had Bridgestone S001 RFT's. 225/40/R19 Front and 255/35/R19 Rear.
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      08-18-2019, 10:42 AM   #15
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Quote:
Originally Posted by Mokujin View Post
Hi All,

Update, I took the car in to my local and had tracking and balancing all done. Unfortunately this has not resolved the issue!

Next step is to go get * marked tyres. What is the standard tyre provided by bmw for the 4 series?
Is it a judder or is it a stutter on the gear shift like it can't make its mind up which gear to be in when you have very light throttle on?

I have this issue and need to book in for the EGR to be checked.
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      08-18-2019, 12:06 PM   #16
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Quote:
Originally Posted by Mokujin View Post
Hi All,

Update, I took the car in to my local and had tracking and balancing all done. Unfortunately this has not resolved the issue!

Next step is to go get * marked tyres. What is the standard tyre provided by bmw for the 4 series?
It is the Bridgestone Potenzas which is what mine (2016) had from new.

However, thanks to the reviews on this forum I fitted Goodyear Eagles (AS2) this time and would never go back!!

I believe these are also star marked
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      08-18-2019, 01:02 PM   #17
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There's a pretty easy way to tell if it's caused by XDrive if it's repeatable - you can disable XDrive temporarily by pulling out a fuse or 2. You'd have to Google which ones, but doing so disables all driver aids so be careful!

If this proves the XDrive at fault, then start looking at new tyres. Other issues such as a faulty EGR system, bad MAF, injectors, glow plugs can also cause a similar 'misfire' feeling but are much less common.
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      08-19-2019, 02:01 AM   #18
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Quote:
Originally Posted by Mokujin View Post
Hi All,

Update, I took the car in to my local and had tracking and balancing all done. Unfortunately this has not resolved the issue!

Next step is to go get * marked tyres. What is the standard tyre provided by bmw for the 4 series?
Get it set up with a full set of the Goodyear Eagle F1 star marked runflats. Have recently put them in my F31 and they are brilliant so good in fact you wouldn't know they are run flats.
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      08-27-2019, 05:44 PM   #19
Mokujin
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Hi All,

Just an update. Managed to get a deal on some potenzas at Costco over the weekend and got them fitted today.

I was mega nervous when driving it but luckily have found that the judder has gone. It was all due to some cheapo tyres, drove me mad.

Hopefully if anyone has the issue in the future they can refer back to this post! Thanks for your help guys I can enjoy the beastie at last 👍🏽😀
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