אילו הבלמים היו תקינים, הייתי עושה רכיבת מבחן.

Here אילו means if in a hypothetical or unreal sense.

In this sentence, אילו הבלמים היו תקינים means something like if the brakes were in proper working order.

A useful thing to know is that אילו often sounds a bit more literary or formal than אם. In everyday speech, many speakers would more naturally use אם in a lot of contexts, but אילו is very common in written Hebrew and in more formal style, especially for hypothetical situations.

Also, אילו can mean other things in other contexts, but here it is clearly a conditional word: if.

It is an unreal / hypothetical condition.

The structure אילו ... הייתי ... corresponds to English if ... were ..., I would ... rather than if ... are ..., I will ....

So the speaker is not simply describing a possible future situation. The sentence suggests that the brakes are not in proper condition, and because of that, the speaker would not do the test ride.

That is why the Hebrew uses:

• היו = were
• הייתי עושה = I would do / I would take

Yes. בלמים is the regular plural form of בלם (brake), and just like in English, people often refer to the set of brakes in the plural.

So:

• בלם = a brake
• בלמים = brakes

In a sentence about a vehicle or bicycle, הבלמים means the brakes as a system or set.

Because תקינים must agree with הבלמים, which is masculine plural.

Agreement in Hebrew means that adjectives usually match the noun in gender and number.

Here:

• הבלמים = masculine plural
• therefore the adjective must also be masculine plural
• תקין = singular masculine
• תקינים = plural masculine

So:

• בלם תקין = a working/functional brake
• בלמים תקינים = working/functional brakes

היו is the past plural form of להיות (to be), and it is used here because the sentence is building a hypothetical condition: if the brakes were functional.

The subject is plural:

• הבלמים = the brakes

So Hebrew uses:

• היו = were

This is similar to English if the brakes were OK.

Even though the sentence is about a hypothetical situation, Hebrew often uses past forms in this kind of unreal conditional structure.

This is a very common Hebrew way to express the conditional would.

It is built from:

• הייתי = I was
• עושה = doing

Together, in this kind of sentence, הייתי עושה means I would do.

This pattern is extremely important in Hebrew:

• הייתי הולך = I would go
• הייתי קונה = I would buy
• הייתי מנסה = I would try

So הייתי עושה רכיבת מבחן literally looks like I was doing a test ride, but in this context it means I would do / would take a test ride.

That is a very natural question.

Literally, עושה רכיבת מבחן is do a test ride, which is similar to English expressions like do a test ride or take a test ride.

Hebrew often uses עושה with activities where English might use a more specific verb. So this is understandable Hebrew.

That said, depending on context, some speakers might choose a more specific phrasing, such as:

• הייתי יוצא לרכיבת מבחן = I would go out for a test ride
• הייתי רוכב כדי לבדוק = I would ride in order to check
• for a car, more often נסיעת מבחן rather than רכיבת מבחן

So עושה is not strange grammatically. It is just a more general verb.

רכיבת מבחן is a construct phrase.

It is made of:

• רכיבה = riding / a ride
• מבחן = test

When Hebrew puts two nouns together in this way, the first noun changes into the construct form and the whole phrase means something like:

• a test ride
• literally a ride of test

So:

• רכיבה = ride/riding
• רכיבת מבחן = test ride

This is very common in Hebrew:

• בית ספר = school, literally house of book
• יום הולדת = birthday, literally day of birth
• נסיעת מבחן = test drive

Because עושה can take the activity directly as its object.

So הייתי עושה רכיבת מבחן is structured like:

• I would do a test ride

If the speaker used a different verb, then a preposition might appear:

• הייתי יוצא לרכיבת מבחן = I would go out for a test ride
• הייתי הולך לרכיבת מבחן = I would go to/for a test ride

But with עושה, the noun phrase can come directly after the verb.

Yes, in many contexts you could use אם, especially in everyday speech.

For example:

• אם הבלמים היו תקינים, הייתי עושה רכיבת מבחן.

That would also mean If the brakes were functional, I would do a test ride.

The difference is mostly one of style:

• אם = neutral, everyday if
• אילו = more formal, literary, sometimes more clearly hypothetical

So both are possible, but אילו gives the sentence a slightly more elevated or written tone.

The comma separates the conditional clause from the main clause.

So the structure is:

• אילו הבלמים היו תקינים = if the brakes were functional
• הייתי עושה רכיבת מבחן = I would do a test ride

Hebrew often uses a comma here, especially in writing, just like English often does in sentences that begin with if-clauses.

Grammatically, the sentence itself does not force only one interpretation, but רכיבת מבחן strongly suggests something you ride, such as:

• a bicycle
• a motorcycle
• possibly a horse in another context, though that is less likely here

If the speaker were talking about a car, Hebrew would more naturally use:

• נסיעת מבחן = test drive

So רכיבת מבחן points more naturally to something ridden rather than driven.

Yes. אילו can have other uses in Hebrew, including as a question word in some contexts meaning which in the plural.

But here, the structure makes the meaning clear.

Because it is followed by a full clause:

• הבלמים היו תקינים

and then another clause:

• הייתי עושה רכיבת מבחן

the sentence clearly has the pattern of a conditional:

• if X were true, I would do Y

So in this sentence, אילו must mean if, not which.