Originally Posted by
FujiFan89
Ah yes, I can see how my saddle may be too narrow and causing my tail bone to act as my "suspension". I'll go to my LBS (thanks for hinting the lingo) today and see if I can get it sorted out with some measuring and a posture check! Thanks!
Note that, due to the shape of the pelvis, the width between one person's "sit bones" is not the same for all riding postures. As the pelvis is rotated forward, the width between the sit bones decreases. This is why road bikes, which tend to have a bar height well below saddle height, tend to have very narrow saddles, and beach cruisers, which encourage a much more upright posture, tend to have wide saddles.