I getting new tyres Monday. Going to strip seal out Monday and top upIt'll be ok to drive for some time yet. It's the seal that is letting by some of the diff oil. It looks like a "creep" at the moment, so it's not a problem to leave until the weather improves. Just top up the diff oil and monitor how much is leaking by. When it starts to leave drips on the floor, more urgent attention will be needed.
Didn't you just run it with odd tyres? That may have forced some oil out the diff. When new are all the same, top up oil and monitor. You may find the leak stops by itself.
Am one that hates things that needs fixed. Got to fix straight away.if I got seal I would of started it today lol