Unusual tire wear...rears shot too soon?

[Super Werty]

Yes I did a search. There are a few mentions of people having the rear tires go sooner than the fronts but I seem to have a more rapidly dissolving rear set.

Car is a year old, has 6000 miles, no highway. Alignment is within spec. Front tires look brand new 90+% left. Rears are evenly worn but 10% left and almost completely bald.

Whats even more strange to me is that it seems to have worn out all within the last 2-3 months/1000 miles.

I don't drive like a maniac, no burnouts, etc etc.

Any thoughts on this??