Differential issue...or not ?

[irwazza]

what sort of tyres do you have ?
maybe check the wear and/or rotate them
sometimes those aggressive block patterns can wear feathered creating more noise, especially at higher speeds

This happens with mine, I have to rotate every 5000km.

[Uncle Fester]

what sort of tyres do you have ?
maybe check the wear and/or rotate them
sometimes those aggressive block patterns can wear feathered creating more noise, especially at higher speeds

Yes, you may be onto something. The road was bone dry today and the grinding noise seemed a bit more dominat.
I swapped the rear left that looked a bit different with the spare but not much changed.
I am pretty certian swapping them all around will not do much. They are all the same brand NangKan and probably all making noise. That is probably why I can't locate it.
A search on the net revealed that they can get noisy after 10,000Km. One reviewer mentioned they sound like bearing noise.


I mentioned in my OP that I first thought of the tires but panicked a bit when I found the hot diff.


As for the diff temp it has now only been around 45˚C, but I normally drive 80km/h for 10-15min and after that only town traffic. Only a moron would drive faster on these crappy roads here.
The other day I was on a different stretch of highway doing 110 and the weather may have been hotter.
I don't know how the diff will stand up to long distance trips.

Yes Leroy, it is a LSD.

[irwazza]

The front and rear will wear differently, try doing a full tire rotatio.