Car Tires Replacement

My car has reached over 7,2,000 kilometers already, but hasn't gotten thea tire replacement yet.

We put commas at every 3rd digit in a number starting from the right

It is a 2021 BMW X3 and wascame out of the factory equipped with run flat tires ex-factory.

we also use the phrase "out of the box" to describe features that commodities come with, but it has a positive connotation.
I switched the word order because placing out of the factory closer to the subject "BMW X3" makes it clear that the car is the thing that came from the factory, not just the tires.

Run flat tires make stronga loud noise, especially when driving on the highway.

using "strong" to describe a sound feels a little unnatural

I love quiet, so I'm considering replacing the run flat tires with normal ones, such as Michelin Pilot Sport 4 tires.

Car Tires Replacement

Your title was technically not wrong, but it sounds more natural this way.

My car has reached over 7,2,000 kilometers already, but hasn't gotten thea tire replacement yet.

It is a 2021 BMW X3 and was equipped with run flat tires ex-factory.

I'm not sure what "ex-factory" means, but the rest of the sentence is correct.

Run flat tires make a strong noise, especially when driving on highway.