Asked the same question to Racing Logic (Hypermax Street coilovers)... as to why some have heaver springs in the rear, and others have heaver in the front.
The reply was "I would say if you are going to do some track driving or "spirited road driving" I would go heavier in the back as it helps Subaru's turn in, but also makes the back of the car fairly stiff. If it was me I would go 1kg heavier in the rear than the front."
