351 rims with Xdrive is not staggered. I have a 13' 535 with xdrive. It is 8.5Jx19 ET33 & tires are 245/40 R 19 XL.
https://www.wheel-size.com/size/bmw/...trim-535i-usdm
Example is another forum member selling their set:
http://f10.5post.com/forums/showthread.php?t=1365804