Whoa, you must be one serious driver who usually drive hard and corner fast, do you?
I used older Michelin Pilot Preceda before with treadwear under 300 and still looks good (around 50-60%) after about 20K km before I sold the car.

Wah cannot be, very weird.
Anyway, maybe can try Goodyear F1 Asymmetric 2 if got the size. I read it got a lot of very good reviews compared to others.
I myself is using F1-D5 which is slightly below the Asy2. Also TW 300, but only have been using for only about 4 mths now, still look like new.