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[danzigfan]

Hi guys, yesterday I replaced both front bearings - I was certain that was the cause of typical failing bearing noise BUT no...There is still bearing noise coming from somewhere. When I try to find where it comes from it doesn't sound like rear wheel bearing at all - the noise/grinding is constant from the move. It's deep sound like an aggressive tyre tread from under the car and doesn't vary when taking corner. It gets oversounded by the wind/tyre noise when driving faster.
A member gave me an idea it could be diff bearing or a diff itself.....Never had this problem before, how can I test it?
Thanks in advance, Stan

[danzigfan]

I jacked up a rear end of the car today and it seems that diff pinion seal is knackered - there is oil around propshaft and diff.
Would it make any difference if I replace the oil in diff tommorow? I'm just guessing but there must be low level oil in the diff Fastest solution to try for now

[Webby the Bear]

A bad bearing should alter with taking corners (when you load up the suspension of the bad bearing).

Try slaloming the steering on a quiet road with no one around obviously! And seeing if the noise changes.

As for the diff I think they all do that. I checked mine and it was still full even though the leak looked bad. But no harm checking 

[danzigfan]

The noise is constant,  no differene when cornering....that's why I suspect diff. I'll replace the oil in it tommorow anyway just to be shure.
Thanks Webby

[Webby the Bear]

 I think that's more likely mate. Plus check tyres and tyre pressures. My mates Megan's had an awful bearing noise......that turned out to be shit tyres! 

Have you checked the bearings for play?

 

[danzigfan]

No play in it but the tyres?... Well that could be the cause as well, I bought them second hand last year....I'll find out in October when I have to put winter tyres on I guess