Redirected question on 20" wheels and LX570 OEM's - Offset question..... (1 Viewer)

[gray rider]

20" LX wheels on a 2014 with 285/55/20 tires.....
Original OEM offset is 45mm and wheel width is 8.5"? ( I think ).
Aftermarket wheels of 20 x 9" width and what offset should be used?