They are not the same thing. They are sourced to H&R for manufacturing but their specs are Dinan.
Originally Posted by Kubica
Dinan xi springs = HnR. Same thing. Go eibach.
Dinan springs drop the car .75 inches and .25inches in the rear and less Harsh when HR /Eibach are more serious. I know because I've owned BavAuto, H & R, Dinan Springs and sold them off in this forum in the past. I haven't tried Eibach yet, but after finding out directly from their R&D team that their spring rate is between ZHP and m3, I didn't want to risk blowing more money on that setup because I've ridden in both and it's not my cup of tea
Last edited by kaboo0m; 06-26-2012 at 04:57 PM.