Rams 4-1 o/u record at home
Bears 3-1 o/u record away
Bears have let up a minimum of 20 pts per game
Two backup QBs bound to make mistakes under pressure
Rams coming off a bye
Bears rank 2nd in the NFL for most points per game
Rams let up an avg of 23 pts per game
Bears let up an avg of 26 pts per gagame
It looks like there's more reasons this game is going over than under.