Originally Posted by
gecho
Since the side studs didn't see much use I'm planning on replacing the rear tire with the Schwalbe Winter tire that only has center studs.
Side studs are important. In case of getting into an uneven icy part (car tyre track got frozen) - easier to climb out of it with side studs. Also, in case the bike starts leaning on either side, for whatever reason (intentional, or a slip) - side studs are good last resort measure.