Z4 Font Hub Replacement - Ring or Teeth?

[wolverine2k]

Hi all,

Me again! So I need to replace my front hubs as the ABS sensor on the front left wheel is playing up. The indy told me that the reluctor ring is messed so needs new hubs/bearing.

Car: 2007 Z4 2.0i

This is what I ordered and was told by the seller is the correct part:



This is what was delivered:



It is stamped with "576681EA 05 / 21D"

I've now contacted 4 different part suppliers with my reg/VIN and they've all sent me pictures of the part they have... 2 have the reluctor ring and 2 have the teeth.

Are there any differences when installing the two? Will the teeth work with the wheel speed/abs sensors if there used to be a reluctor ring?

I'm now confused and not even sure which ones mine has! As the garage mentioned reluctor rings, I assumed it was the rings version and not the teeth.

Any help would be appreciated. Thanks all!

 

[enuff_zed]

I'm not sure which is which to be honest. I think mine had the teeth.
Until I saw your photos I had always assumed the front hubs had the teeth and the reluctor rings were on the rear? Could well be wrong of course.
However, those teeth are pretty solid items and I'd be surprised if they are knackered.
Have you tried simply fitting a new ABS sensor first?

 

[wolverine2k]

I'm not sure which is which to be honest. I think mine had the teeth.
Until I saw your photos I had always assumed the front hubs had the teeth and the reluctor rings were on the rear? Could well be wrong of course.
However, those teeth are pretty solid items and I'd be surprised if they are knackered.
Have you tried simply fitting a new ABS sensor first?

You know what, I wouldn't be surprised if they gave bad advice. They used to be such a good Indy but now they're terrible. They wouldn't even change the motor in my headlight, told me to go and buy a brand new headlight. I just drove the car round the block and the ABS light is off now... but the traction control is still kicking in but that's the rear reluctor rings.

I might skip doing this but now that I have the parts am thinking might as well. Doesn't look too hard.

 

[enuff_zed]

I'm not sure which is which to be honest. I think mine had the teeth.
Until I saw your photos I had always assumed the front hubs had the teeth and the reluctor rings were on the rear? Could well be wrong of course.
However, those teeth are pretty solid items and I'd be surprised if they are knackered.
Have you tried simply fitting a new ABS sensor first?

You know what, I wouldn't be surprised if they gave bad advice. They used to be such a good Indy but now they're terrible. They wouldn't even change the motor in my headlight, told me to go and buy a brand new headlight. I just drove the car round the block and the ABS light is off now... but the traction control is still kicking in but that's the rear reluctor rings.

I might skip doing this but now that I have the parts am thinking might as well. Doesn't look too hard.

Trouble is, you may do it, then still find its the sensor. So don't bin the old hub if it's still serviceable in the end.

 

[wolverine2k]

I'm not sure which is which to be honest. I think mine had the teeth.
Until I saw your photos I had always assumed the front hubs had the teeth and the reluctor rings were on the rear? Could well be wrong of course.
However, those teeth are pretty solid items and I'd be surprised if they are knackered.
Have you tried simply fitting a new ABS sensor first?

You know what, I wouldn't be surprised if they gave bad advice. They used to be such a good Indy but now they're terrible. They wouldn't even change the motor in my headlight, told me to go and buy a brand new headlight. I just drove the car round the block and the ABS light is off now... but the traction control is still kicking in but that's the rear reluctor rings.

I might skip doing this but now that I have the parts am thinking might as well. Doesn't look too hard.

Trouble is, you may do it, then still find its the sensor. So don't bin the old hub if it's still serviceable in the end.

If it's the same as an E46 - which it does look like - then it's a 15 min job unless the bearing separates so add another 20 mins on I guess. I'll probably do both sides anyway as I'm already doing every corner of the car lol.

 

[SDJ]

I swapped the bottom picture for the top and both worked fine. I needed to replace the bearing rather than the ring, but you can actually buy the ring separately from Autodoc for £3 if your bearing is fine.

 

[wolverine2k]

I swapped the bottom picture for the top and both worked fine. I needed to replace the bearing rather than the ring, but you can actually buy the ring separately from Autodoc for £3 if your bearing is fine.

Last time I used Autodoc, I waited 3 months for a part that never turned up lol.

If they're the same reluctor rings as the rear, then it's a tenner a pair from other places anyway.

Won't removing the hubs mess up the bearings anyway? I had one side of the bearings disconnect from the hub last time I did this on an E46.

 

[SDJ]

I love Autodoc, but that's a different topic!
The inner race stayed on the hub when I removed mine. Therefore if just changing the sensor ring leave it it on the axle. Tbh, for the sake of £50 you may as well change the whole thing. The inner race came off quiet easily too.