In my humble opinion 20 inch (406 mm)wheels are much better than 16 inch. They roll better ,there is a larger selection to choose from and they give a better ride. I love my 20 inch folders but mostly ride my ss and fixed 20 inchers.I like to take the ss out to new areas and nose around on weekends or use the fixie as a cure for cabin fever in winter. Fat 406 mm high pressure capable tires offer good shock absorption and and can be pumped up to roll fast on smooth roads. P.s Which Newcastle One somewhere in the U.S or Newcastle Upon Tyne?