Incorrect w&b can affect a lot of things. From longer ground roll during landing, to wrong brake settings, to worse handling of the aircraft and increased stall

Incorrect w&b can affect a lot of things. From longer ground roll during landing, to wrong brake settings, to worse handling of the aircraft and increased stall speeds. Under normal circumstances it should not be a problem due to huge safety margins, but if other things go wrong it starts adding up. One more hole in the swiss cheese model.