Originally Posted by TTON

I'm looking into getting a folding bike and would like to know what the main differences between riding on 16" and 20" wheels are? I've riding 20" wheels before (but not on a folding bike) but not 16".

Basically, are 16" alot slower than 20" wheels? Meaning do I have to work alot harder to go the equivalent speed if I were on 20" wheels (all other things being equal)? Are they ok in going down steep hills?