Tire Pressure For Toyo Spectrum Tires TOYO Tires - Anyone Else Have Problems With Tire Wear ?

TOYO tires - Anyone else have problems with tire wear ? - tire pressure for toyo spectrum tires

Toyo Tires - Anyone else have problems with tire wear?
I have 4 (four) tires TOYO new STS 35,000 miles
The car has 68.000 miles.
I run regularly (every 6000 miles).

TOYO spectrum P185 60 R15 [84T] (Radial)
I am sure that, if properly executed.
I think that crazy always a 4 wheel alignment once a year, often check my tire pressure does not drive me, I do not understand.
But last year, it seems they are using it right, because I am a constant noise and seems to tire of the four, but how can I know?

I added more information to remedy that! Thank you.