Front wheel bearings - different sizes?

[Woody_72]

Hi all, I've just been looking at front wheel bearings on the Autodoc website and the front bearings seem to come in two sizes differing only by something tiny like 0.6 mm or so. Anybody bought these and do you know if the sizes are related to a year or a trim level etc

 

[adam davies]

Ring dealership and ask them for part no is my best advice. So many variations. Or check seat etka online for the part.

 

[iNowack]

Hi all, I've just been looking at front wheel bearings on the Autodoc website and the front bearings seem to come in two sizes differing only by something tiny like 0.6 mm or so. Anybody bought these and do you know if the sizes are related to a year or a trim level etc

There are two different knuckles (50 and 55mm) so it maybe depends on that.

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[Woody_72]

Thanks guys. Etka doesn't recognise my VIN but there's a Seat dealership 5 minutes from my work so I'll nip over at lunchtime.

 

[adam davies]

Thanks guys. Etka doesn't recognise my VIN but there's a Seat dealership 5 minutes from my work so I'll nip over at lunchtime.

Also how do you know the wheel bearing is gone ?. I thought i had a dud wheel bearing turned out its was a squared off tyres and bad alignment.

 

[SuperV8]

Front wheel bearing assembly OE part number off my 2015MY 184 ST

8S0498625A

 

[Woody_72]

I don't to be honest, I have the symptoms ie a regular whummm, whummm, whumm noise when driving and I can feel the noise ever so slightly through the accelerator pedal. However, I've jacked up and rocked all the wheels and none of them have any play. I've also tried the trick I learned at Northwest Vagtech of holding onto the spring whilst you rotate the wheel to detect any vibrations or graunching but nothing.

 

[SuperV8]

I don't to be honest, I have the symptoms ie a regular whummm, whummm, whumm noise when driving and I can feel the noise ever so slightly through the accelerator pedal. However, I've jacked up and rocked all the wheels and none of them have any play. I've also tried the trick I learned at Northwest Vagtech of holding onto the spring whilst you rotate the wheel to detect any vibrations or graunching but nothing.

If you remove your wheels and rotate the disc it can be easier to 'feel' the wheel bearing for roughness as the mass/inertia of the wheel can mask any small bearing issues. More difficult to feel roughness on the front axle with the drive shafts though.

 

[adam davies]

I don't to be honest, I have the symptoms ie a regular whummm, whummm, whumm noise when driving and I can feel the noise ever so slightly through the accelerator pedal. However, I've jacked up and rocked all the wheels and none of them have any play. I've also tried the trick I learned at Northwest Vagtech of holding onto the spring whilst you rotate the wheel to detect any vibrations or graunching but nothing.

Im betting its tyres and alignment check the tyres havent saw toothed squared of. Take it to a tyre plac3 ask them check tyres and if it is squared off get alignment and tyres done. My fr had the hum hum hum.

 

[iNowack]

From what i know is that MK3 has pretty bad wheel hub bearings. Especially if you have steel 50mm knuckle. I picked a small hole and it started to produce whooming noise. Ive checked wheels tires and alingment and everumything was fine so ive changed wheel bearing and after that everything is fine. I know a lot of people with same stories sadly.

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[Mr Pig]

I would not change the bearing until the tyres have been ruled out. You can swap the tyres round and see if the noise moves.

I've had noise which I was sure were the bearings but turned out to be the tyres several times.