Workshop manual lists both measurements.
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i had a look and cant find the spring rate for white purple
but they will be at guess in in the 170lb per in of travel, King springs 2in lift springs are 190lb per in.
but they will also do custom springs so ill be ordering a set of 150's for mine soon
Just to revive this thread. Measured centre of wheel to guard this morning - 450mm
Have some Kings and Bilsteins awaiting installation. Can't wait! [thumbsupbig]