Some rudimentary detective work:
No such tire as a Kumho PA1.
There are all-seasons called Kumho PA31 and PA51
The PA31 is not available in 19 inch sizes, assuming the OP had that right, it's not this tire:
https://www.tirerack.com/tires/tires...del=Ecsta+PA31
The PA51 is available in 255/40/19 but NOT 255/45/19:
https://www.tirerack.com/tires/tires...del=Ecsta+PA51
255/40/19 is 27 inches
stock 245/40/19 is 26.7 inches
There's no way that there's a 30 mm difference, so as everyone stated . . . something is off.