DallasGSF

I bought a 2016 GSF, last week, (atomic silver, circuit red interior) and I'm thinking of taking the Vossen VS083 wheels of my '06 GS 300 RWD and putting them on my GSF. (looking to avoid paying $3k - $4k for another set of Vossens)
They are 20x9 and 20x10.5 wheels with 245/35/20 tires on front and 275/30/20 on the rear.
I hear the offsets for the GS's are the same, but can someone verify that the offset for the '06 GS 300 is the same as the offset for the GSF?

Also, are the rim and tires sizes adequate?


I believe the rear is fine, but I may need a wider tire for the front.