2mm can range from 2 feet to 2000 miles. Has more to do with how you use the brakes than mileage. 2mm can range from 2 feet to 2000 miles.
You should adhere to the minimum brake pad thickness recommended by the manufacturer. In most cases, you should replace the brake pads when they are only about 3mm thick. While sometimes you can get away with 2mm, this is exactly where the metal wear indicator is exposed and makes a squeaking noise against the disc.
Any mechanic will tell you it’s time to change your brake pads when the pad is in the 3mm to 4mm range. For context, note that the standard thickness of new brake pads is 12mm. The first half of the life of your brake pad is usually carefree.
What is the recommended thickness of your brake pads? Ideally, your brake pads should be thicker than 6.4 mm (¼ inch) to function properly. If it’s thinner, you should get a replacement soon. Most auto mechanics also agree that the absolute minimum thickness of brake pads is 3.2 mm (⅛ inch).
Brake pads generally last between 30,000 and 70,000 miles, but some can last up to 100,000 miles. There are many factors that account for this broad spectrum. First, brake pads come in a variety of types and compositions, and are fitted to even more different brake systems and discs.
So a 5 means that the mechanic estimates that you have about 50 percent of the life of the brake pads left. In this case, they do not need to be replaced. On the other hand, if you’re at 1 or 2, which means you have 10 to 20 percent of pad life left, it means it’s time to replace the pads.
In order for your car’s braking system to work properly, the brake pads must be no thinner than ¼ inch. The thickness of the brake pads plays an important role in road safety. 1⁄8 inch thick brake pads have reached the end of their recommended wear limit.
Most manufacturers and mechanics will also agree that you should probably replace your brake pads when they are 75% worn or 3mm thick.
On average, brake pads should be replaced every 25,000 to 65,000 miles, while rotors should typically be changed between 30,000 and 70,000 miles. However, the exact number may vary depending on riding conditions and style.
Your front brake pads also wear out faster than your rear brake pads. The front of your vehicle carries a lot more weight transfer under braking, resulting in more wear. Over time, heat and friction also contribute to brake pad wear. Which axle your brakes are on also affects how much your pads wear.
The one rear brake pad that is worn to the point of metal contact can have a number of reasons. Some reasons could be a stuck brake caliper piston, dirty and stuck brake caliper slide pins or a clogged brake flex hose, just to name a few.
Sometimes brake pads wear out too quickly because your calipers aren’t working properly. The calipers press the pads against the rotor to initiate braking. When a caliper binds or binds, the pad may be left on the surface longer than necessary. The pad wears out faster because it stays on the brake disc for too long.
What exactly causes uneven wear on brake pads? A common cause of the problem is DTV (Disc Thickness Variation). Varying thicknesses of your brake discs will eat away at the brake pad when they contact flat spots in the disc, causing the pad to wear unevenly.
Believe it or not, most of the time you can check pad wear without removing the wheels. And you don’t need a mechanical engineering degree for that. You can usually see the pad through the wheel and do not need to remove it. Once you’ve found the pad, note its thickness.
Uneven brake pad wear most commonly occurs as a result of brake caliper failure. The caliper contains a piston that presses on the brake pads to stop the vehicle. When the driver releases the brake pedal, a seal in the caliper pulls the piston away from the pad.