For the adjustable coilovers (i.e. Tein Flex) how much pre load is being applied on everyone's set up?

What's a good rule of thumb on spring pre load, if any?

 

What are you talking about? Where to put the lower perch? The Tein instructions tell you where to put it. I don't know of anything else that is adjustable on them other than the dampening of the shocks.

 

On the Tein Flex coilover, there are three things to adjust: 1) spring pre-load, 2) damping, 3) height adjustment.

I'm wondering how much spring pre-load to apply (where the spring perch is located wrt shock length) in general or as a rule of thumb besides what Tein suggests.

1) Is there an ideal range (location) for performance?
2) How much pre-load are you applying?

 

minimal - you want to use the lower bracket to adjust height not preload

 

2nd what KingTut said. The Tein manual tells you exactly where to put the perch and total damper length.