Front Brakes: What They Are, How They Work, and When to Replace Them
When you hit the brake pedal, front brakes, the primary braking system on most cars that handles 70% or more of the stopping force. Also known as front brake assembly, they’re made up of pads, rotors, calipers, and hydraulic lines working together to slow your wheels. Unlike rear brakes, front brakes bear the brunt of the work because weight shifts forward during braking—this is why they wear out faster and need more attention.
Most cars rely on brake pads, friction material pressed against the rotor to create stopping power and rotors, the metal discs that spin with the wheels and get gripped by the pads. Over time, those pads thin out, and rotors can warp or get scored. You’ll know something’s wrong if you hear squealing, feel vibration in the pedal, or notice your car pulling to one side. Ignoring these signs doesn’t just mean slower stops—it can lead to expensive rotor damage or even brake failure.
UK drivers often replace front brake pads by 30,000 miles due to stop-and-go traffic, damp roads, and heavier vehicles. But it’s not just about mileage. A pad thickness under 3mm is a clear warning. Some drivers wait until the warning squealer makes noise, but that’s already too late—you’re grinding metal on metal by then. Regular checks, especially before long trips or winter driving, can save you hundreds in repairs.
Replacing front brakes isn’t always a job for a mechanic. Many people do it themselves with basic tools, saving a lot of money. But it’s not just about swapping parts. You need to check caliper movement, bleed the brake fluid, and make sure everything’s aligned. A loose caliper or air in the lines can ruin even the best new pads.
What you’ll find below are real, practical guides from UK drivers who’ve been there. You’ll learn how to spot worn brake pads before they become dangerous, whether DIY replacement is worth it, how often pads actually last under normal conditions, and why ignoring brake noise is a bad idea. No fluff. No theory. Just what works on the road.
