The treads on my tires are really worn down/out. I need to change them.
The tires on my car are almost bald. I need to get some new ones.
ーThe treads on my tires are really worn down/out. I need to change them.
「タイヤのトレッドがすごくすり減っている。交換しなきゃ」
tread で「タイヤのトレッド(タイヤが地面に触れる面)」
wear down/out で「すり減る」
ーThe tires on my car are almost bald. I need to get some new ones.
「車のタイヤがツルツルだ。新しいの買わなきゃ」
bald で「すり減った」
to get some new ones で「新しいのを買う」
ご参考まで!