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BMW 5-Series (G30) Forum 2017+ BMW 5 Series (G30) General Discussions Highway vibrations

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      02-05-2020, 02:14 PM   #89
AlteBMW
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Quote:
Originally Posted by toxic_bimmer View Post
Just came back from the dealer. have the car (2020 M550i xD) for a couple of months but not much highway driving, NY/NJ area (read terrible roads). Started noticing a constant vibration in the steering wheel and gas pedal at speeds over 60mph to the point it was getting annoying. Went to the dealer this morning and they checked the wheels, verdict: front and back left rims bent (they are 19"!!!)! What a bummer, as I never hit any pothole badly enough to get concerned. Front left is visible during the rotation but can't see much of a bending on the rear, but they say it is there, anyway, agreed to get them straightened in-house by that dealer and added alignment just in case. Cost after small discount: rim straightening $400 ($200 per wheel) + $200 alignment. I know that it can be done cheaper but didn't want to spend more time on this. Disappointed with BMW rim alloy quality... had 20" and 21" before on Porsches, Audis and few other earlier BMWs and never had a rim bent... such a bummer, especially on 19". They definitely need to improve the alloy quality, so brittle! Will report back if the vibration is still there after repairs.
This is, unfortunately, a common story in the NY/NJ area. I had 3 rims and a tire replaced last year on my '17 G12 (19") but it was all covered by tire and wheel insurance. I also had curb rash fixed under insurance. IMHO tire and wheel ins for those of us who have to drive on these crappy roads is a good investment.
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      02-06-2020, 01:00 PM   #90
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2020 M550i xD - bent rims

Quote:
Originally Posted by toxic_bimmer View Post
Just came back from the dealer. have the car (2020 M550i xD) for a couple of months but not much highway driving, NY/NJ area (read terrible roads). Started noticing a constant vibration in the steering wheel and gas pedal at speeds over 60mph to the point it was getting annoying. Went to the dealer this morning and they checked the wheels, verdict: front and back left rims bent (they are 19"!!!)! What a bummer, as I never hit any pothole badly enough to get concerned. Front left is visible during the rotation but can't see much of a bending on the rear, but they say it is there, anyway, agreed to get them straightened in-house by that dealer and added alignment just in case. Cost after small discount: rim straightening $400 ($200 per wheel) + $200 alignment. I know that it can be done cheaper but didn't want to spend more time on this. Disappointed with BMW rim alloy quality... had 20" and 21" before on Porsches, Audis and few other earlier BMWs and never had a rim bent... such a bummer, especially on 19". They definitely need to improve the alloy quality, so brittle! Will report back if the vibration is still there after repairs.
UPDATE: dealer has fixed the rims and alignment (don't know if alignment was needed at all as they didn't show the pre-alignment readings) and the car is back to normal. Kudos to them for having it done in one day. One takeaway, I spoke with a sales rep and he confirmed my suspicion that the alloy used for rims on recent cars is more prone to bending as BMW is trying to make the wheels lighter. The goal is great but the end result is not so much if the owners are left facing an increased probability of ending with damaged rims. May be getting an aftermarket set of not very expensive forged wheels of same size is a better solution... checking out the HRE and BBS as an alternative.
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      03-15-2020, 07:13 AM   #91
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Quote:
Originally Posted by AFinnish530e View Post
2019 530e here. Having vibrations felt in the steering wheel and the seat(s) at 125km/h until 155km/h or so and rarely but randomly at lower speeds (from 60) as well. Had it on stock M Sport 18 inch wheels with RFT tyres and no change when I put Continental Ice Contact 2 non-RFT tyres on the same rims. Been at the dealer once, no solution found. Taking it back on 5th Nov.

What is bothering me is that at times the vibration is stronger, sometimes almost, almost unnoticeable. Im really hoping to get this resolved.

What wheels and tyres do you have in your vibrating car(s)?
I think I have finally found the cause which was the stock 18 inch M Sport alloys delivered with the car. I think they (or one of those) have been defective from factory. With two different set of tyres and roadforce balance two dealerships could not get it sorted. The problem was more noticeable when the inner sides of the rims were covered in dirt and dust, but was never away even when the wheels were properly cleaned.

Yesterday I went to pick up a used (but in perfect condition) set of Style 759 20 rims and RFT tyres, the ride is 100% smooth at all speeds. I am relieved
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      03-15-2020, 07:38 AM   #92
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Quote:
Originally Posted by Krill View Post
I have a new G30 520d xDrive which vibrates through the seats at around 120-130 km/h. (around 70-80 mph). Sometimes it happens at slightly lower speeds as well. I´ve had an alignment and road force balance done (not by BMW), but it still vibrates. It´s going in to the dealer on Monday.
Anybody else having vibration issues?
If you have hit any potholes it could be bent rims, I had vibration at the same speed and I had two bent rims.
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      03-16-2020, 04:13 AM   #93
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It really could very well be bent rims even though you don't recall anything special.

My score is 5x bent 18" oem wheels so far with my G30 530e. 1/4 out of my (non-RF) summer set and 4/4 out of the (RF) winter set. I got pretty good feel of what broke the summer set wheel, but all others are complete mystery to me.

And this is without any tire damage
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      03-16-2020, 01:09 PM   #94
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2018 540xi M-Sport 19'' rims. I've been suffering from 82-86mph vibrations for long time, countless visits to two dealers, multiple road force balancing attempts, alignments, rim straightening shops, replaced RFT with regular Michelin, nothing helps. I bought this car hoping to keep it for a long time but this single issue drives me crazy. If anyone knows anyone who can solve it I'd be more than happy to pay out of pocket, even thought the car got years of warranty on it. it's only 20,000mi so far, and I've noticed the vibrations very early on, it's all documented in my dealer's visits.
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      03-19-2020, 07:45 AM   #95
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Reading about this sounds all too familiar to a problem many of us had with the E39 - Another 5 series that was biased toward comfort. My G31 has the slightest “shimmy” at speed which feels very similar to the same issue I battled on my E39 for ages. I, like many, went through all of the changing tyres, balancing, alignment which made no real difference. What fixed it completely for me and many others on the E39 was fitting new stiffer suspension bushes. I know that doesn’t help when they are probably not available for the G30 yet, but can’t help but feel the problem is too much compliance in the suspension bushes in the quest for comfort and noise isolation.
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      03-23-2020, 10:40 AM   #96
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I've noticed less vibrations after switching to non RFTs. I imagine the RFTs transmit more of the road undulations thru the bushings to the interior.
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