Uneven Ride Height....

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dasherdiablo1

Member
I've just parked the wifes Z4 3.0Si Sport Coupe in the garage and noticed when looking from the rear it slopes down at the drivers side. So...got the tape measure out and measured from floor to underside of top of wheel arch. Results as follows:-

NSR=680
OSR=660
NSF=670
OSF=670

So I was right! Point to note is floor is level and even, car has a full tank of fuel and no one was sitting in it. Thing is this means that with a driver in it it will be even worse!!! Also handling appears ok but haven't really pushed it in the last month, car has brand new tyres on too so can't even compare tyre wear.

Will definitely be contacting the local stealer tomorrow but I'd appreciate it if people could check theirs and give me some feedback. I'm guessing it's either a sagging or snapped spring; which I'm guessing should be covered under warranty

Thanks in advance!
 
The heights of my 2.5i Z4 Sport are as follows (car empty with full tank of fuel):
NSF: 608mm
OSF: 610mm
NSR: 632mm
OSR: 606mm

TIS states the standards with 18" wheels with sports suspension are 602mm (front) and 588mm (rear) for E85. The height is measured from the lower flange of wheel (not the ground) to lower edge of wheel arch, with 2x68kg at the seats, 14kg in the boot and full tank of fuel. The difference between left and right should not be greater than 10mm.
 
If you do a search a search you will find this question has been posted a few times over the last couple of weeks and it always seems to be about 20mm, no one has of yet posted an answer, however my car is going into Revolution in Gateshead next week for a 4 wheel alignment and to hopefully find out why she's sitting down on the drivers side, so all I can say is if I find out a definetive answer I will post for everyone to see, failing that I will at least post the outcome.

I won't have the car back until the 18th. so no answer's before then. :thumbsup:
 
Dreamer said:
Whenever i jack my car up it always takes a good few days to settle and level back to normal. Weird.
Click to expand...

When you jack the car on one side, the wheel moves in towards the center as it drops down relative to the body. As a result, when you lower the car back down, it makes contact with floor slightly closer to the center. Our big fat sticky tires tend not slide sideways very easily, so the suspension can not move back up to it's normal at rest poition relative to the body, causing the car to lean to one side.

In my experince, this clears up within a few miles of driving. I am very surprised to hear you say that it takes a couple of days to settle back down.
 
Well it's in with the stealer today, so eagerly await their comments. I've also asked them to look at the corrosion on the 108 alloys. They haven't mentioned any charge for looking at it so hoping there won't be anything to pay regardless of the outcome!
 
A quick update....BMW reckon all is ok with the suspension...nothing damaged or broken. Furthermore; when they measured, the passenger side was lower than the drivers.
So guess what.....when I got home I measured it again myself.....and...yep still 20mm lower on the drivers side. Will check with another stealer me thinks.
They've taken photos of alloys and referred to BMW UK...
 
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