hi im getting an s3 and want to get some new wheels for it, iv found some 19" bbs rs866 speedline wheels they are 8.5 wide have an offet of et48 and are 5x112. That doesnt mean much to me but does anybody know if they will fit ok or will i need some sort of adaptors? also any ideas on what size tyres id need to get? the car isnt lowered. thanks