If it's pre facelift (not x-drive) then according to the user manual about 3% difference in front to back wheel circumference is ok and that makes sense for the drive train since the transfer case is pure ratio/differential just the abs software has to cope with the speed differences. If you dont get abs oddities you should be good to go.


Sent from my iPhone using Tapatalk Pro

__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)