Front Wheel Hubs 31-21-1-108-379

[BorgBmw]

Hi All,

Trying to resolve some longstanding shimmy when I brake. Have new calipers and rotors and pads sourced from W&N, but been told it’s related to the hub and the rotors not mounting flush. So would like to find a set of front wheel hubs part number 31-21-1-108-379 for my 72 Bavaria. Appreciate any leads. Thanks

 

[HB Chris]

Although it is possible I suppose, I would think it would be very unusual for hubs to wear out. More likely the the tension strut bushing or even a wheel bearing that is too loose. Later BMWs have this problem with worn control arms.

 

[BorgBmw]

Although it is possible I suppose, I would think it would be very unusual for hubs to wear out. More likely the the tension strut bushing or even a wheel bearing that is too loose. Later BMWs have this problem with worn

 

[BorgBmw]

Thanks. I think the bushings were checked, but will confirm. I have a set of control arms and bushings, which based on an e28 I had with shimmy at speed was the issue, but this is definitely while braking and at all speeds, though not noticeable at higher speed.

Good news - was able to source a pair from FrakenBav before his were upgraded

 

[HB Chris]

I drove an e32 740iL which had shimmy during braking, I was convinced it was the rotors. Owner took it to his mechanic and it needed control arms, geometry is very different I know. A slightly loose wheel bearing might also cause this. Hope this helps.