Originally Posted by Jerry Bransford
Rubicon springs are the same exact height as TJ springs are, the Rubicon's springs only have a stiffer spring rate. So for the same weight Wrangler, standard TJ springs will give the same height as Rubicon springs will. The Rubicon doesn't come with spring spacers either.
See, this is the part that doesn't make sense to me. ZJ springs - which provide 1.5-up to 3" (according to some) lift in the front are also the same height. But their spring rate is stiffer as well which means they don't settle as much. I was skeptical the extra rate would make a difference, but it really does. So with that, a stiffer rate *should* mean a higher ride height - which is perhaps where the possible 1" that was suggested could come from.
If a spring was stiffer and the *same* height, then it would stand to reason it must be shorter when uncompressed.