If you hear a squeaking sound when you brake, your brake pads are probably asking for help. Sometimes, repair shops recommend changing all the pads and you may wonder: ‘’do I really need to change them all?’’. Pads are very small pieces, but don’t let their size fool you because they are very important for your car’s safety. So, let’s talk a bit more about these pieces, in case you need some help.
How brake pads work
Pads are a key part of the disc brake system. When you press the brake pedal, hydraulic pressure pushes the pads against the brake discs (rotors). This creates friction, which slows and stops the car.
Even though they are small, pads do an important job every time you brake. That’s why many repair shops suggest replacing all the pads at the same time. Doing that can:
- Keep braking balanced
- Make sure the wear is even
- Maintain maximum braking power
Changing all the pads at the same time could also be more affordable in the long term because uneven wear can damage other parts of the brake system.
How many pads does a car have?
This is a very important point because some people might say ‘’change the 4 pads’’, but a modern car really has 8 pads: Each wheel has 2 pads, one on each side of the brake disc. So, 4 wheels × 2 pads = 8 brake pads total.
When mechanics say “change the four pads,” they usually mean changing the pads on one axle — either the two front wheels or the two rear wheels. That equals 4 pads.
Replacing all eight pads means servicing the entire braking system, giving you full balance and maximum safety.
Is it always necessary to change all pads?
No, it’s not always necessary. Most cars wear out the front pads faster because the weight of the car moves forward when braking. Many mechanics say that it’s okay to change only the front pads or only the rear pads, as long as you change both pads on the same axle. This keeps braking even so the car doesn’t pull to one side.
If the rear pads still have plenty of life and the front ones are worn, replacing only the front pads is safe and saves money. But ignoring worn pads is never safe — uneven braking can cause unpredictable stops or accidents.
When do you need new pads?
To know when to replace the pads is key for your safety. Some signs of your pads being worn out are:
- Squeaking or squealing when braking
- Longer stopping distance
- Vibrations in the pedal or steering wheel
- Brake warning light on the dashboard
Most repair shops follow the 80% rule: replace the pads when only 20% of the friction material is left. But, the question is: ‘’what’s the typical lifespan of brake pads?’’ Well, aggressive driving, towing, or heavy traffic can shorten the life of your pads, but:
- Organic pads: 30,000–40,000 miles
- Ceramic pads: 50,000–70,000 miles
Worn Pads are dangerous
Driving with worn pads isn’t just noisy — it’s dangerous:
- They can overheat and damage the braking system
- Less friction means longer stopping distances
- Ignoring them can lead to metal-to-metal contact, which destroys the brake discs and turns a small repair into a big, expensive one
Even if only one axle is worn, safety should always come first.
So…
Listen for noises, pay attention to warning signs, and replace them before they get too thin. This way you can make sure your car stops safely, protects the brake discs, and keeps your vehicle in good condition.
So, replacing pads on time is not just another expense — it’s an investment in your safety and peace of mind.