Our Roman Cart in Munich Exhibition

[Jack A]

The size of a wheel is driven by the quality of the worst roads it must travel. Too small a wheel, and the cart will sink deeper into a given hole, and require more forward force to overcome it. The tradeoff is in the weight of the wheels and undercarriage, and the size of the draught team needed to pull the cart as a result. So, if you must travel rough roads, and you have strong enough draught animals, and enough of them, use bigger wheels than normal.