Preflop Cash Games Raise Sizing: Live vs. Online

I've noticed, from reading a bunch of different material online, that when playing live cash games the tendency is to preflop raise to a size of 4-5BB or sometimes even bigger like 7BB. Yet online (100% of what I play) the default cash game open raise size is typically 3BB (maybe 4BB from early position or 2-2.5BB from late. Why is there this seemingly universal difference? Does anyone know? Any live players out there? And how much does it change your preflop ranges and your postflop play?

I have not played any where live that people were leading out those type of bets unless you are seeing lot of people playing the majority of the hands.

Yup, those are the standard differences. The reason the live raises are larger is because bad players will play more hands live, and you can get more value by playing a good range, raising larger, and reducing your post flop field size. If you raise 2.5-3x in a live game, you'll probably be playing 5+ way every hand.

POKER GURU YOU SAID IT! Clasic 10 person 1-2$ NLH IS REALLY A.T.C. any lol 27 unless you isolate min. bet from me without a reraising is 5-7 JJ or better 12-16 no raise. sometimes u get 6 callers cause they all put u on the high pp & lol #5 & #6 are calling thinking im getting odds! Lots of idiots 2-5 nlh serious game! 1st raise is 30$ 2nd pushin 100$

Played 20 40 limit my biggest game ever! 1-2nlh highest! live!

The difference is that live tables are much more likely to find recreational players than boring, tend to play with anything and in that way, you get more value for your good hands.