knobblies

informal plural plural-only

(informal) motorcycle tyres with knobbed treads, for off-road or motocross riding

Japanese Meaning

オフロードやモトクロス走行用の、突起状トレッドを持つオートバイ用タイヤ

Before the race we checked the knobblies to make sure they were properly inflated and ready for the mud.

レース前に、ノブ付きのオフロード用タイヤが適正に空気圧が保たれていて、泥に対応できる状態か確認した。

Sense（1）

(informal) motorcycle tyres with knobbed treads, for off-road or motocross riding