I remember reading that this is a common thing. I haven't been able to find any solid information as to why this would be. Its been like this since I bought it and everything looks good underneath. Anybody know anything about this?

Are you running sway bars or no? I've heard the passenger side sags sooner than the drivers side because of the way the engine twists the body while under load.

I am running sway bars. This makes sense to me but sucks to accept with only year old springs.

I lifted my xj yesterday and I have the same thing going on. I double stacked spacers on the passenger side and it's about a 1/4" now.

I had a smashed lower control arm mount that caused a lower passenger side.

I have the same problem only the drive side is lower. It's only noticable when i dont have the sway bar connected. I think it's just because one coil was a little more worn out than the other, i bought them used.