Tayar motosikal itu meletup.

• tayar = tire / tyre
• motosikal = motorcycle
• itu = that, and often also helps mean the in context
• meletup = explode / exploded / has exploded

So the sentence is literally something like That motorcycle tire exploded.

Malay usually puts the main noun first and the describing noun after it.

So:

• tayar motosikal = motorcycle tire
  literally: tire motorcycle

This is normal Malay word order. English does the opposite much more often.

A few similar patterns:

• kedai buku = bookshop
• rumah kayu = wooden house
• stesen bas = bus station

itu is a demonstrative, usually meaning that. In natural translation, though, it can also make the noun phrase sound like the when the thing is already known from context.

So tayar motosikal itu can mean:

• that motorcycle tire
• the motorcycle tire

A key thing for English speakers: in Malay, ini and itu usually come after the noun phrase, not before it.

• motosikal itu = that motorcycle
• tayar itu = that tire

In sentences like this, itu usually applies to the whole noun phrase:

• tayar motosikal itu

So it is understood as that motorcycle tire or the tire of that motorcycle, depending on context.

This is a common feature of Malay: ini/itu often appear at the end of the full noun phrase, not necessarily right next to the exact word they are modifying in the way an English speaker might expect.

The core meaning is to explode or to burst with a bang/pop.

For a tire, natural English might say:

• exploded
• burst
• blew out

Malay meletup covers that sudden bursting idea well, so it is a very natural verb here.

letup is the root. The form meletup is the standard verb form with the me- active prefix.

So:

• letup = root related to exploding / a bang
• meletup = to explode

English speakers often notice this because Malay verbs are frequently built from roots with prefixes.

In casual speech, you may hear letup in some contexts, but meletup is the normal standard form in this sentence.

Malay verbs do not change form for tense the way English verbs do.

So meletup by itself does not specifically mark:

• present
• past
• perfect

Time is usually understood from context or added words.

For example:

• Tayar motosikal itu meletup. = The motorcycle tire exploded / has exploded.
• Tayar motosikal itu telah meletup. = The motorcycle tire has exploded / exploded.
• Tayar motosikal itu akan meletup. = The motorcycle tire will explode.

A rough English-friendly guide is:

TA-yar mo-to-si-kal i-too meh-luh-toop

A few helpful points:

• tayar has two clear syllables: ta-yar
• motosikal is pronounced roughly as mo-to-si-kal
• itu = ee-too
• meletup = meh-luh-toop

Malay spelling is fairly regular, so words are usually pronounced close to how they are written.

Yes, it is a natural and standard sentence.

It sounds like a straightforward way to say that a motorcycle tire suddenly burst/exploded.

If you want to make the timing more explicit, you could say:

• Tayar motosikal itu sudah meletup. = The motorcycle tire has already exploded.
• Tayar motosikal itu baru sahaja meletup. = The motorcycle tire just exploded.

But the original sentence is perfectly normal on its own.