# Brake tracks

- URL: https://www.gt2i.com/en/19416541/brake-rotor

## Description

Replacement brake pads for cup-style rotors allow you to replace the part of the brake pad that comes into contact with the rotor, while retaining the central cup when it is reusable. Also known as brake discs for cup-style rotors or braking surfaces, they provide a suitable solution for maintaining removable braking systems used in motorsports.
In rallying, on the track, or in hill climbs, repeated braking places heavy stress on the discs. Replacing the friction pads restores braking surfaces that meet the system’s specifications without having to purchase a complete assembly with its aluminum hub every time.
Replacing the friction pads on a removable brake disc
A brake disc on a hub combines a metal friction pad with a central hub attached to the wheel hub. On assemblies designed to be disassembled, the friction pad can be replaced separately from the hub when it reaches its wear limit or needs to be replaced for another technical reason.
This procedure allows the aluminum bowl to be reused provided it shows no deformation, cracks, or wear that would prevent its reuse. The mounting system must also be inspected before reassembly.
The replacement track must match the assembly’s original design. A disc with similar sizes is not necessarily an interchangeable part.
Sizes and Compatibility of Braking Surfaces
The selection of a brake pad for a rotor depends on several characteristics: outer diameter, thickness, inner diameter, offset, center diameter, center distance, and number of mounting points. The geometry of the mounting area must also be identical to or explicitly compatible with that of the rotor.
Depending on the design, rotors use mounting holes, notches, or specific drive systems. The tolerances and shape of these elements are essential to ensure proper assembly.
Compatibility with brake calipers and brake pads must also be verified, particularly the permissible brake disc thickness and the height of the surface swept by the brake pads.
Fixed, Semi-Floating, and Floating Brake Tracks
Braking surfaces can be designed for different mounting systems with the hub. A fixed mounting uses a rigid mounting, while semi-floating or floating systems allow for certain controlled movements depending on their design.
In floating mountings, the intended freedom of movement between the brake pad and the rotor helps accommodate thermal expansion during intense braking. Axial and radial play depend on the mounting system used.
Fixed and floating brake pads are not interchangeable without verifying their geometry and mounting compatibility. The selection must comply with the specifications of the existing system.
Grooving, Ventilation, and Friction Characteristics
Replacement pads may have smooth, grooved, or pierced surfaces, depending on the part number. These designs notably influence the behavior of the friction surface, the removal of certain residues, and thermomechanical stresses.
Ventilated brake pads have internal channels whose geometry varies by manufacturer. Some use oriented fins and require specific right- and left-side pads to ensure the intended ventilation direction.
The material, mass, thickness, and ventilation must be suited to the vehicle’s operating conditions. Grooving or perforation alone does not guarantee better cooling or a shorter braking distance.
Mounting Brake Rotors and Inspecting Mounting Hardware
Replacing a brake pad requires inspecting the condition of the brake drum, the contact patches, and the mounting components. Bolts, nuts, washers, springs, or drive systems must correspond exactly to the intended mounting.
Some manufacturers require that fasteners be replaced when changing brake rotors. Mountings are not necessarily included with replacement rotors: check the product specifications to confirm their inclusion.
Tightening must comply with the torque specifications, mounting order, and any securing procedures prescribed by the manufacturer. After assembly, it is necessary to check, in particular, the proper positioning of the disc and its lateral runout.
Wear, Break-in, and Maintenance of the Braking System
A brake track must be replaced when it reaches its minimum permitted thickness or exhibits defects requiring replacement, such as certain cracks or deformations. Wear limits and inspection criteria depend on the manufacturer and the brake disc’s design.
After mounting new brake pads, the discs and pads must be broken in according to the manufacturer’s recommendations. This step is particularly important for braking systems operated at high temperatures.
Brake pads, brake calipers, brake hoses, and brake fluid in good condition also contribute to consistent braking performance. In racing, inspections must be tailored to the frequency and intensity of the vehicle’s use.

## Subcategories


## Products

- [Stage 3 Brake Kit / 380mm Replacement Rotors/Discs](https://www.gt2i.com/en/brake-rotor/159473-stage-3-brake-kit-380mm-replacement-rotors-discs-3666618025827.html): €898.00