I checked the sticky about the fitment guide, but I don't know if 20" Volans will fit on my 2011 XF Premium. I have the Carrelia rims on now 19"
I was hoping to use those on my winter. Would I need a new set of tires for the Volan's? Any help would be appreciated, thanks!

 

I'm no expert but I believe they should fit just fine. If I am not wrong the Volans are 8.5 front and 9.5 rear?? Either way they should work, the calipers are smaller on the PL vs the SC so no issues there. I just put some 20" wheels on mine, I just kept to the factory tire sizes for the XFR, 255/35/20 front and 285/30/20 rear. There was a set of Volans with tires on ebay a couple of weeks ago for around $1700 I think.