When should i do a CB drop bracket

I am sitting at 3" lift int he rear and 2.75" in the front, i have some vibrations when accelerating at 5-10 mph and turning the corner. Do i need a CB bracket or why do people install them ?

 

They are installed for vibrations due to off angles in the dtiveshaft. You could try spacers.....go quarter inch at first and go from there.

 

They install them to rid vibes. I would try shims or 1/4" square washers first, I found that (2) 1/4" washers work best for my application.

Edit: meant 1/4" not 1/2"

 

make sense to bring the CB down, can u tell if its rubbing at a spot thats causing the vibes?

 

Not sure what you mean by that, could you elaborate?

 

does the shaft rub on the CB bc of the angle and you would see the friction spot that caused the vibes

 

The shaft doesn't touch anything, it goes through the cb but you won't notice any wear until probably 10k miles later and even then it would be minimal.