Translation of "two wheels" into Japanese

With its two wheels of the same size it was essentially the machine that is common today.

前後両輪が同一径のこの自転車は,今日ふつうに見られる自転車と本質的にはかわりません。

The front wheel plays an important role in two-wheeled vehicles moving without falling over.

二輪車が倒れずに走行するのには前輪が大きな役割を演じています。