Winter Tire Pressure Check-in
 

Stopped by Discount Tire today to have a rear tire replaced after catching a nail in the sidewall and after the new tire install, they set all tires to 39 PSI.

Front Tires: Continental DWS 245/35/20 - 39 PSI
Rear Tired: Continental DWS 275/30/20 - 39 PSI

Does 39 psi coincide with the tire pressure placard on the inside of the fuel filler door?

I would go with the pressure stated on the fuel door placard. I wouldn't go with winter tire pressure for the DWS because they are not winter tires. Nevertheless, good choice with DWS as tires.

good choice on dws. I have them on my other car.
go by pressure located on gas door label.

I would go with 38F and 33R as per the fuel door.