Lốp xe bị thủng.

Lốp xe means tire.

• lốp = tire
• xe = vehicle / car / bike, depending on context

So lốp xe is literally vehicle tire or the tire of a vehicle.

A useful contrast:

• lốp xe = tire
• bánh xe = wheel

English often uses wheel loosely, but Vietnamese usually distinguishes them more clearly.

Not necessarily. Xe is a broad word meaning vehicle.

So Lốp xe bị thủng could mean:

• the car tire is punctured
• the motorbike tire is punctured
• the bicycle tire is punctured

Context usually makes it clear. If you want to be specific, you can say:

• lốp ô tô = car tire
• lốp xe máy = motorbike tire
• lốp xe đạp = bicycle tire

Bị often marks that something happened to someone/something, usually in a negative or unfortunate way.

In this sentence:

• Lốp xe bị thủng = The tire got punctured / The tire is punctured

So bị adds the idea that the tire was affected by something bad.

You will often see bị in sentences about unpleasant situations, for example:

• bị mất = got lost
• bị hỏng = got broken
• bị đau = got hurt / is in pain

It is similar to a passive, but it is best not to force it into English grammar labels too strictly.

Bị often works in a way that feels passive because the subject is the thing affected by an action or event:

• Lốp xe bị thủng = the tire was punctured / the tire got punctured

But in Vietnamese, bị is also strongly connected to the idea of an unwanted result, not just passive voice.

So yes, it has a passive-like feeling, but negative affectedness is a very important part of its meaning.

Thủng means punctured, pierced, or having a hole in it.

In this sentence, it describes the tire’s condition:

• lốp xe bị thủng = the tire is punctured

You can also use thủng with other things:

• áo bị thủng = the shirt has a hole
• túi bị thủng = the bag is torn / has a hole
• tường bị thủng = the wall has a hole in it

A very common Vietnamese pattern is:

subject + bị + result/state

So here:

• lốp xe = the tire
• bị = is adversely affected / gets
• thủng = punctured

Putting it together:

• Lốp xe bị thủng

This is a normal and natural Vietnamese order.

Vietnamese usually does not require articles like a or the.

So Lốp xe bị thủng can mean:

• The tire is punctured
• A tire is punctured
• The vehicle’s tire is punctured

Which one sounds best in English depends on context.

Vietnamese often leaves definiteness unstated unless it needs to be made clearer.

Yes, if the context is clear.

• Lốp xe bị thủng = the tire is punctured
• Lốp bị thủng = the tire is punctured

Including xe makes the phrase more complete and explicit. Leaving it out is common when everyone already knows you are talking about a vehicle tire.

It is natural and correct.

People might also say slightly different versions in conversation, such as:

• Lốp xe thủng rồi. = The tire is punctured already.
• Xe bị thủng lốp rồi. = The vehicle has a flat tire.
• Lốp xe bị xịt rồi. = The tire has gone flat.

Your original sentence is clear, standard, and useful.

They are related, but not exactly the same.

• thủng = punctured, has a hole
• xịt = flat, out of air

A tire can be xịt because it is thủng, but xịt focuses more on the lack of air, while thủng focuses more on the hole/puncture.

So:

• Lốp xe bị thủng = The tire is punctured.
• Lốp xe bị xịt = The tire is flat.

A simple pronunciation guide:

• lốp — starts like lop, with a rising tone
• xe — roughly like se in Northern Vietnamese
• bị — roughly bee, but with a heavy, low tone
• thủng — roughly thoong, with a dipping tone

Tone notes:

• lốp = sắc tone
• xe = ngang tone
• bị = nặng tone
• thủng = hỏi tone

The tones matter a lot in Vietnamese, so it is good to practice the whole sentence aloud several times rather than only the individual words.

You can say:

• Lốp xe của tôi bị thủng.

Breakdown:

• lốp xe = tire
• của tôi = my
• bị thủng = is punctured

In everyday speech, people might also say:

• Xe tôi bị thủng lốp. = My vehicle has a punctured tire / My tire is punctured.

Both are natural.