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G30 (2017 - Current)
The next generation 5 Series, chassis code G30, arrives at dealers in February 2017. Looking like a scaled down 7 Series and riding on the CLAR platform, the new 5 Series will have a focus on lightweight and sporty performance. Engines options will come from BMW's new B family for the 530 and 540 and a turbocharged V8 for the M550i. Read more about the 2017 5 Series

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Old 02-06-2020, 12:13 PM
toxic_bimmer toxic_bimmer is offline
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Highway vibration and bent rims

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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Old 02-06-2020, 12:40 PM
RLSinCO RLSinCO is offline
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I had a similar issue, but mine was worse because I have the adaptive suspension with 4 wheel steering. I ran over the mother of all potholes here in Colorado, but was riding on the original stock Goodyear All season run flats on the staggered 19" wheels. Actually, I never noticed any vibration as a result of that accident (I've read a lot of negative reviews on those tires - lots of peeps complaining of sidewall bulges but they were heroes to me)....until I swapped tires a few months later. I got a set of the Continental DSW 06s and man! Steering wheel was literally shaking in my hand above 70 mph. Took the car back in, asked for another tire balancing, noticed same behavior even after the rebalance.

Took the car back in, - this time the service manager showed me my two front rims were bent. I ordered replacement OEM wheels from a shop in California ($700 for both) but vibration was still there. So this time I insisted on a different set of tires, and ended up with the new Goodyear all season Exhilarates (yes, that is the name of the tire but currently #1 ranked by Consumer Reports for all season performance). Now the vibration is MUCH LESS, but still faintly there. Took the car back to the shop, and they now showed me one of the rear wheels is slightly bent. Because of the missed diagnoses initially on the front wheels and then the rear, they REALLY hooked me up pricewise on the Goodyears.

They are saying because the rear wheels are steerable, that is why I still feel a vibration up through the steering wheel. They also told me that because the DSWs have a much softer sidewall - it amplified the vibration a lot more than the Goodyears. Now I am thinking to just get the rear wheel repaired as they say the bent rim is much less than the fronts...but that's a hassle because I will be without the car for up to 3 days.
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Old 02-06-2020, 03:22 PM
toxic_bimmer toxic_bimmer is offline
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I also have an M professional adaptive and 4 wheel active steering systems, same goodyears, so the situation is identical. Since I straightened the rear rim too, despite the fact that it was not visible to my eye, at least, the car is back to normal.

If the vibration is still there you might want to a) fix the rear rim and b) check the alignment and if any of the numbers didn't get back to the factory specs, you might want to look into control arms which might have a minor bend after hitting that pothole. Service guy told me that one of the alignment numbers was under 1 degree off but not critical and suspect that one of the control arms could possibly be out of shape. Again, nothing critical in my case, but you might want a second look by the technician.
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Old 02-06-2020, 07:39 PM
SoCal540 SoCal540 is offline
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Some will disagree but Iím guessing the bent rims are caused by the runflats. Iíve never had a problem with BMW wheels being too soft and bending due to the bad roads I endure on a daily basis... has anyone on here experienced bent rims with 19Ē non run flat tires on their G30?


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Old 02-07-2020, 07:32 AM
richpat69 richpat69 is offline
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I hit a massive pothole driving through Memphis last year. Bent two wheels and destroyed two tires. I limped home after replacing the tires and had my local dealer straighten the wheels. Zero vibration afterwards. Car is an Msport 540 iX. I do a fair amount of driving throughout the US and our roads are really in bad shape, particularly the right lanes due, no doubt, to truck usage.
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Old 02-07-2020, 01:25 PM
SoCal540 SoCal540 is offline
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Quote:
Originally Posted by richpat69 View Post
I hit a massive pothole driving through Memphis last year. Bent two wheels and destroyed two tires. I limped home after replacing the tires and had my local dealer straighten the wheels. Zero vibration afterwards. Car is an Msport 540 iX. I do a fair amount of driving throughout the US and our roads are really in bad shape, particularly the right lanes due, no doubt, to truck usage.


I shredded the 2 driver side tires on my F10 a few years ago. Terrible road condition, both sidewalls on the Continental DWS06 were destroyed but I was really lucky because I didnít have any damage to the wheels just needed to replace the tires. Other than that Iíve been fortunate.


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Old 02-07-2020, 04:51 PM
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DLF750 DLF750 is offline
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On my 2011 750 I had 21 inch OEM rims...Hankook non-RFT tires... more than a few times a year I'd hit a Chicago pothole and pop BOTH tires on that side and have to call a flatbed... one time actually bent the rim. After that I went back to the 20s and RFTs...never had an issue with potholes after that. But the Hankooks were really really low profile - looked like rubber bands over the rims...
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19", 5 series, 664m, bent, m550i, rims


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