Squealing or squeaking noises are usually the first sign. Brake pads have a small metal indicator built in that starts to squeal when the pad material wears thin. If you hear a high-pitched noise when you press the brake pedal, don't ignore it — get them checked soon.
Grinding sounds are more serious. If you've gone past the squealing stage, you'll hear a grinding or scraping noise. This means metal is rubbing on metal, which damages your discs as well as your pads. The repair bill increases significantly at this point, so acting on squealing early really does pay off.
Longer stopping distances are a major red flag. If your car takes noticeably longer to stop than it used to, your braking system may be compromised. This could be worn pads, glazed discs, or even a brake fluid issue — all of which need immediate attention.
Vibration through the pedal often points to warped brake discs. Discs can warp from excessive heat or uneven wear. You'll typically feel a pulsing sensation through the brake pedal when stopping. Warped discs affect braking efficiency and should be replaced.
The brake warning light on your dashboard shouldn't be dismissed. It can indicate low brake fluid, worn pads, or an ABS fault. A diagnostic scan will identify exactly what's triggering it.
Pulling to one side under braking suggests uneven pad wear or a sticking calliper. Your vehicle should stop in a straight line — if it pulls left or right, there's an imbalance that needs correcting.
As a rule of thumb, have your brakes inspected at every service. Catching wear early means pads-only replacement rather than pads and discs, which makes a noticeable difference to the cost. If you have any doubt, it's always better to get them checked.