[KenWittlief]

In general, treads are only usefull if you are moving over soft ground - like mud or sand

you dont get any extra traction by using treads unless you have several wheels along the length, pushing it into the carpet - look at a photo of a tank or bulldozer, they have several wheels on each side applying downward force on the length of the whole tread.

because the friction of the tread is a function of the downward force on it - so if you have two wheels, with a tread running between them, you wont get anymore friction that if you simply wrapped the tread material around the wheels separately (like a tire)

but another issue this year is climbing the stairs - if you are going to do that, then treads might be the way to go