[iManu]

The car felt wobbly and the steering was imprecise so I brought it to the dealer.

What can cause this? It's the upper tab (driver side rear) breaking in half but all other parts are intact. Tires, wheels, bushings and control arms and lower tab is in good condition.

My question is, first, how can only the upper tab brake without any flat tires or any other parts failing? I recall I did not hit any potholes. The part is the #7 or maybe the #4 on the real oem website).
Second, is it possible to brake this part by spirited driving? Is this a manufacturing defect?

Thanks in advance!

[Dandle]

That's not very good. It looked old like that is a support to stop the hub twisting rather than taking suspension loads directly. What mileage is you car and how did you notice it snapped? Was there knocking or much change in the drive?

[iManu]

Originally Posted by Dandle

That's not very good. It looked old like that is a support to stop the hub twisting rather than taking suspension loads directly. What mileage is you car and how did you notice it snapped? Was there knocking or much change in the drive?

My car has around 38000km. It's been a while I heard clicking sound from the front when I braked. But for the rear noise, when accelerating, it happened 2-3 weeks ago and in under a week I hear loud metal clunking noise every time i accelerated or braked. It got bad pretty fast.

[The Dutch Joe]

Made a powerslide against a curb?

[sinbad4]

Think it’s part #8, actually.

I don’t like seeing this. It shouldn’t happen without VERY significant trauma; and even then, I wouldn’t expect to see fail like that. Looks like it bent down, tore and snapped. Hard to tell from one photo. I sincerely hope this was predicated by a manufacturing defect and not under engineered.

[Dandle]

It's actually part 7 in the drawing. I just compared it to a photo of mine when I had the wheels off.

[iManu]

Originally Posted by The Dutch Joe

Made a powerslide against a curb?

No haha my rims and tires are intact and nothing else is broken!

Good news! Bmw NA will cover 80% of repairs and my dealer will cover the rest!

[sor]

That's odd. It looks like maybe it hit against something that bent it in half and from there it split. Do I also see in the upper left corner some fresh metal scrape on another part, perhaps related to the same event?

[iManu]

Originally Posted by sor

That's odd. It looks like maybe it hit against something that bent it in half and from there it split. Do I also see in the upper left corner some fresh metal scrape on another part, perhaps related to the same event?

The drag metal scratches is due to my tab rubbing against it every time I brake.

[teaston]

Because it is a cheap stamped steel part, probably corroded from where a stone knocked some of the paint off.

[nakamuru]

Originally Posted by teaston

Because it is a cheap stamped steel part, probably corroded from where a stone knocked some of the paint off.

I worry about things like this when warranty expires . Why can't bmw have 100k warranty if they believe in their car so much lol or even 75k

[The Dutch Joe]

Originally Posted by iManu

No haha my rims and tires are intact and nothing else is broken!

Good news! Bmw NA will cover 80% of repairs and my dealer will cover the rest!

So BMW will pay the part(s) and the dealer the assembly?

[teaston]

Originally Posted by The Dutch Joe

So BMW will pay the part(s) and the dealer the assembly?

More like the other way around!

[iManu]

Originally Posted by nakamuru

at 38000km? It's not normal that it brakes haha
I worry about things like this when warranty expires . Why can't bmw have 100k warranty if they believe in their car so much lol or even 75k

i agree! But the cars sell so they will keep it this way

[atrueb]

That is crazy! My g01 has been making a clunky noise aswell lately when accelerating slowly or when going over speed bumps. I hope I don't have the same issue!