Originally Posted by
furballi
One leg is usually stronger than the other. Rotating the saddle optimizes the sweet spots at the rear of the saddle and reduces the chance of one thigh rubbing against the front/mid-section of the saddle.
I've never given much thought as to why a slightly off centre saddle works for me, but that's probably it.
And I've been told by numerous doctors, chiros, physios, etc. that my hips/pelvis are crooked too so the slightly off centre saddle probably works for that too.