Rear brake disc

Right or left rear brake disc adaptable for car without license:

- Microcar Virgo 3 (from serial number VH840BBL0... 10605 )

- Microcar MC1 (up to serial number VH851... 110506 )

- Microcar MC2 (up to serial number VH852... 403226 )

- Jdm Titane 3 ( VGP97 )

- Ligier Nova ( VJRJS20 )

- Ligier Xtoo 1 and 2 (up to serial number VJRJS28FD... 9555 )

Fixing by four screws

Diameter 170 mm

Sold individually

However, we advise you to replace them with 2 as well as to install new brake pads.

Reference origin Microcar : 0183054 / 1002147

Reference Jdm : 904213 / 0904213

How do brake discs work?

The disc brake is a type of braking fitted to cars. There are other braking systems, including the drum brake. On current cars, disc brakes are systematically fitted to the front wheels, with the rear wheels sometimes having a drum brake.

The disc brake system consists of three mechanical elements:

• The brake caliper ;
• Brake pads;
• The brake disc-even him.

The disc is connected to the brake caliper and pads. It is fixed on the hub of the wheel. When you press the brake pedal, you operate a piston that pressurizes the brake fluid. The one-then actuates the brake caliper, which supports the pads on the brake disc. It is this friction that slows down the rotation of the disc and brakes your vehicle.

But there are different types of brake discs:

• The full brake disc: it is a solid metal disc, which has no grooves. Its cooling is less good, but the disc can exceed 600 ° C during braking.
• The ventilated brake disc: the disc has two faces between which an empty space allows better ventilation.
• The grooved brake disc: it has grooves on its surface, which allow better cooling of the disc by increasing friction.
• The perforated brake disc: it has holes on its surface, which allow rainwater to drain easily and promote the cooling of the disc.

The solid brake disc is the cheapest, but it is also the oldest. Above all, it evacuates heat less well than a ventilated, grooved or perforated brake disc, while the action of the pads on the disc causes friction that causes the brake disc to rise in temperature when you brake.

Note, however, that you do not have a choice of disc type when changing your brake discs. Indeed, it is necessary to respect the original brake discs.

When to change your brake discs?

Brake discs and pads are wear parts. It is therefore necessary to change them periodically. In general, it is considered that the brake discs of a car must be changed every 30 to 40,000 kilometers. The pads are to be replaced every 15 to 20,000 kilometers, so the discs are changed every other time.

However, the interval at which brake discs are replaced naturally depends on their wear. This varies according-to the weight of your car, the roads on which you drive but also your driving. Winding roads or frequent, brutal braking obviously wear out the brake discs faster.

Manufacturers provide for a minimum brake disc rating that must be respected. It appears in your maintenance logbook. The thickness of the brake disc must be checked regularly to ensure that you respect this rating and drive safely. Brake discs must be changed when their thickness is no longer sufficient.

How do I know if the brake discs are dead?

Braking is one of the most stressed systems in your vehicle, and brake discs are wear parts to monitor regularly to ensure you drive safely. Your brake discs have a minimum thickness rating that must be checked.

When the thickness of the disc approaches this dimension, it is worn and must be changed. It is possible to measure the thickness of a disc with a specific tool (the palmer) easily found in store or a caliper.

But worn or damaged brake discs also have symptoms, for example:

• Longer braking distances;
• Noise during braking;
• From-to the brakes ;
• A problem with the brake pedal, which is hard, soft or sinks without resistance.

If you experience any of these symptoms, consult a garage immediately. It is of course very dangerous to drive with worn or damaged brake discs.