Size chain for a 16T front sprocket?

[Val]

Not for just one tooth extra.

:agree

If you look at http://www.gearingcommander.com/

If you keep the same chain the spokcet distance will change. Means you move the rear tyre the same way you do when set up chain slack.

You will see 16T makes the sprocket distance in mm from standard 617.46mm to 613.79mm that is 3.66mm less. Surely you can move the rear tyre 3mm.