What is the legal minimum thickness for brake discs?
The intervals must not be more than 3 months. The thickness of the remaining pad must NOT be less than 5 mm. All new brake discs are 45 mm thick. Providing continuous cracks are not apparent, minimum brake disc thickness is 37 mm.
How do I know my brake disc size?
Diameter: This is the diameter of the brake disc. Number of Holes: This corresponds to the number of bolts on the wheel. If the wheel has four bolts then you would need brake discs with four holes in it. Pitch Circle : The pitch circle or pitch circle is the notional circle determined by the positions of the bolts.
Are all brake discs the same size?
Discs are available in different sizes. All other things being equal, a large disc will slow you down faster than a small disc. Shimano’s road disc brake system has been designed for use with 140mm or 160mm rotors, the idea being that users can choose the size to suit their weight and intended use.
Can a car fail MOT on brake discs?
A brake pedal will fail if its grooves or raised grip sections are worn smooth. However, it will not be a fail if the vehicle has been manufactured with one that doesn’t have grooves or anti-slip material. Often a vehicle is fitted with an aftermarket brake pedal rubber.
Are brake discs part of mot?
Brakes are one of the most used part of any vehicle so it is no surprise they are on of the main reasons so many vehicles fail their MOT. This is why during any MOT, the brake pads, discs and in some cases shoes, will be checked.
Are front and rear brake discs the same?
Answer: Rear disc brakes are basically the same thing as front-wheel disc brakes. They consist of three main parts: brake pads, a caliper, and a rotor. Brake pads are located on each side of the rotor and are actually pushed against the rotor to stop the wheel and thereby stop your vehicle.
How do you measure brake discs without removing wheels?
Method
- Cut the straw where you have marked it.
- Place the cut-off end of the straw next to your ruler and mark 5mm from the end.
- Move the mark to 0mm on your ruler and take your final measurement.
- If your brake pads are 4mm and less, consider replacing them.
How thick should a brake disc be?
Ideally, your brake pads should be thicker than 6.4 mm (¼ inches) for proper functioning. If it’s thinner than this, consider getting a replacement soon. Most car mechanics also agree that the bare minimum brake pad thickness is 3.2 mm (⅛ inches).
Are car brake discs universal?
Brake rotors are not fully universal and interchangeable, but they can be considered slightly more versatile than the brake pads that were discussed previously. They can generally be used with any car, as long as the size of the mount is correct.
How long should brake discs last?
Generally, brake discs should last more than 50,000 miles on average, but a number of factors affect the lifespan. If you keep them well maintained and drive sensibly, you may be able to get up to 80,000 miles out of one set!