Question...

[hammermachine]

Why is a 4inch lift considered better than a 6 inch one?

 

[big dan]

generally you get more flex and a softer ride while also keeping a lower cog.

 

[87BrnRsd]

I guess its all preference and it depends on what you are doing. What was said above is correct. If your fourwheeling on rocks like a lot of us here, then 4" is generally better cause it offers more flex and a lower cog. If your mud bogging, then you might get swamped with 4" and maybe a 8-12" lift is better. It wont articulate, but it will keep you out of the mud.
-Harrison

 

[Mudgod]

Also the 6" cost more, you need longer brake lines, need to chance your steering set-up. I have a 6" on my tow rig with 37" tires.