Part No Applications:
G2NMB2035BLK,
NMB2004,
NMB2031-LT,
NMB2035/BLK,
NMB2036,
NMK3213
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BREMBO FAQ
What are the benefits and features of the Gran Turismo Brake System?
Will I experience brake noise with Brembo brakes?
Where can I find test data on stopping distances?
What should be put on the rear?
Should big brakes be installed on the front wheels or all four?
Are Brembo calipers directional?
Which direction should the discs rotate?
How long do Brembo discs last?
Should new discs and pads be bedded in and if so, how?
Are discs with cast-in-place holes better than cross-drilled discs?
Why are there so many holes in a cross-drilled disc?
What are the advantages of drilled and slotted discs?
Will it work with my standard master cylinder, ABS, or traction control?
Why use a two-piece "floating" disc assembly?
Is the biggest brake disc the best answer for my vehicle?
What are the benefits of opposed-piston fixed calipers? What are the benefits and features of the Gran Turismo Brake System? Features: Dual use-street and track events
Race-based components
One or two-piece drilled and/or slotted discs
Billet aluminum hats
"Floating" disc mounting system
Four-piston cast aluminum calipers
High Performance friction material Benefits: Can be used on the street at drivers' schools and at club events.
Proven on-track performance at the highest levels of racing.
Disperses gasses, cleans pads for better "bite."
Reduces "unsprung weight" for better handling.
Provides maximum braking force without the flex of sliding calipers.
Reduces heat-related stress, increases brake performance and pedal feel.
Aggressive pads that last longer and provide the highest level of performance. back to top Will I experience brake noise with Brembo brakes? Brembo makes every effort to test for and eliminate abnormal brake noise from the systems we offer. There are many factors that can contribute to abnormal brake noises, and while it is unlikely that a Brembo system will create noise, the engineering and customer service departments are available to answer questions and work to solve any noise issues which may arise. back to top Where can I find test data on stopping distances? At the speeds that stopping distance is generally measured from (60 to 70mph), the test is primarily testing the tire's grip on the pavement. As delivered from the manufacturer, nearly all vehicles are able to engage the ABS or lock the wheels at these speeds. Therefore, an increase in braking power will do nothing to stop the vehicle in a shorter distance. For this reason, we do not record stopping distances at this time. The Brembo systems will show their greatest advantages when braking from higher speeds, or when tasked with repeated heavy braking. The increased braking torque provides for maximum deceleration at speed, and the ability to absorb and quickly dissipate the intense heat generated during repeated braking insures that the braking system will perform at the same high level each time. back to top What should be put on the rear? Direct OE replacement drilled or slotted discs are available for the rear. They work with your standard calipers and give you increased stopping power, cooler operating temperatures, and reduced brake fade. It's an engineered balance for the larger, more powerful front braking system. back to top Should big brakes be installed on the front wheels or all four? During braking, the front of the vehicle does the majority of the work. Exactly how much is influenced by the vehicle's weight distribution, wheelbase, and center of gravity height. Brembo engineers all of its systems to ensure that the brake balance of the vehicle is not compromised. If not designed properly, adding a big brake system to the rear of the vehicle can result in an unstable condition, and actually degrades braking performance. Brembo offers rear brake systems for a select number of high performance applications. back to top Are Brembo calipers directional? Brembo's calipers are directional, due to the use of differential piston sizes. The leading pistons are smaller in diameter in order to combat uneven wear of the brake pads. Upon close examination of the caliper, you will find a small arrow cast in place which denotes the direction of disc rotation. Additionally, when mounted on the vehicle, the bleed screw(s) must be at the top of the caliper. back to top Which direction should the discs rotate? It is a popular misconception that the slots or drillings in a disc determine the direction of rotation. In truth, for an internally vented disc, the geometry of the vanes dictates the direction of rotation. There are three vane types in use: Straight
Pillar vane (comprised of many small posts)
Curved vane
The first two vane types are non-directional, and can be used on either side of the vehicle. The curved vane disc, however, is directional. A curved vane disc must be installed with the vanes running back from the inside to outside diameters in the direction of rotation. Please see figure. Orienting the disc in the manner creates a centrifugal pump. The rotation of the disc causes air to be pumped from the center of the disc, through the vanes, and out through the outside diameter of the disc. This greatly enhances the disc's ability to dissipate heat. Additionally, all of Brembo's slotted discs are directional as well, regardless of the vane geometry. The discs should be installed such that the end of the slot nearest the outer edge of the disc contacts the pad first. Please see figure. back to top How long do Brembo discs last? The useable life of a brake disc is influenced by a number of factors including vehicle weight, driving style, vehicle usage, brake pad material, and many others. Therefore a blanket disc lifetime cannot be given. However, when used in the same conditions, a Brembo disc should meet or exceed the life of the disc it replaces. It is important, however, to periodically check the disc thickness, and replace the disc if it falls below the minimum allowed thickness. back to top Should new discs and pads be bedded in and if so, how? The answer is yes, for optimum performance, any time different friction materials or discs are introduced, a bedding procedure should be carried out. While the vehicle is stationary, pump brakes to ensure a firm pedal.
Drive the vehicle cautiously to test fit and function.
The brakes should be smooth, with no vibrations, judder, etc.
Drive the vehicle to a remote area and perform at least 30 brake applications of 3-second duration. Use light/medium deceleration with varying starting speeds. Leave at least ½ mile between each brake application.
The purpose of this procedure is to gradually increase the temperature in the components without inducing thermal shock, and to mate the brake pad and disc friction surfaces.
After the repeated stops, drive the vehicle for several miles with little or no braking in order to adequately cool the components.
After the above process is completed, the system is ready for normal use.
When the system achieves elevated brake temperatures for the first time, a slight increase in pedal travel and pedal effort may occur. After this first "fade" and proper cooling, the system will maintain its optimum performance at all temperatures.
Some of the bushings in the two-piece disc assembly seem to be loose.
The two-piece disc assemblies utilize a floating disc. The mounting system of the disc is designed to allow a specific amount of float in both the radial and axial directions. The merits of this system have been discussed earlier. Brembo has engineered special springs that are used on every other fastener in order to slightly preload the assembly. This has been done to prevent excessive noise from the system during street use, while still maintaining the benefits of a floating disc. These springs can be seen when looking at the backside of the disc. The small screws on the backside of the disc are properly torqued during assembly and utilize thread lock compound to prevent loosening. They must not be tightened further.
back to top Are discs with cast-in-place holes better than cross-drilled discs? Brembo has extensively studied and tested cross-drilling versus casting the holes in place and found no significant effect on performance or durability. back to top Why are there so many holes in a cross-drilled disc? The number of holes in a cross-drilled disc is part of the engineered system. Brembo has done extensive testing with regards to the number of holes, their size, their location and their chamfering. This attention to detail is what truly sets Brembo apart in the world of braking. The same attention to detail that is delivered to the Ferrari Formula One effort is a component of the high performance program. The number of holes in a disc is in part a function of the size of the disc and the internal venting (if it is a vented disc). back to top What are the advantages of drilled and slotted discs? The main advantages of drilled and slotted discs are the same: increased brake "bite", and a continuous refreshing of the brake pad surface. Drilled discs have the additional advantage of being lighter and running cooler. However, there are certain pad materials that should not be used with a drilled disc. back to top Will it work with my standard master cylinder, ABS, or traction control? Brembo brake systems are designed to work with your standard master cylinder, and do not hamper the function of your ABS or traction control systems. back to top Why use a two-piece "floating" disc assembly? There are several reasons that a two-piece floating disc assembly is of benefit. First, by using an aluminum bell for the hub section of the disc saves a great deal of weight. Since this is both rotating and unsprung, it benefits the acceleration, braking, and handling of the vehicle. Secondly, it is better able to handle the large temperature changes that a brake disc experiences. During severe use, temperature variances become present in a one-piece disc and generally cause warping of the disc. This not only results in vibration of the vehicle, and pulsing of the brake pedal, but also pushes the pistons farther away from the disc. In a two-piece floating disc assembly, the iron disc heats up more uniformly, and the controlled float which is present allows for the differential expansion of the very hot brake disc, and the relatively cool aluminum bell. This allows the disc to be used under severe conditions without having a detrimental effect. back to top Is the biggest brake disc the best answer for my vehicle? Not necessarily. There are many factors to take into account when choosing a performance brake system. First and foremost, a brake system must be designed based on the vehicle parameters, and the type of use it will experience. Brake systems are designed to operate best within a prescribed temperature range. While modern high performance friction materials broaden this temperature range from relatively cold pad temperatures to the high temperatures experienced in performance driving situations, the use of a disc that is too large will limit disc temperatures to the extreme lower end of this range. Not only will the disc temperature not reach the optimum range, but it will also be heavier than necessary. Below you will find an explanation of how reducing the weight of the braking system further enhances performance. back to top What are the benefits of opposed-piston fixed calipers? A fixed caliper is secured rigidly to the axle assembly and has at least two opposing pistons that force the pads against the disc. A sliding or floating caliper has pistons on only one side of the disc. Therefore, when the caliper acts, it must slide or float in order to bring the pad on the opposite side in contact with the disc. Nearly all original equipment calipers are of the floating type. In a system with fixed calipers, not only is the mounting much more rigid, but the stiffness of the caliper itself is greatly increased. This manifests itself in enhanced braking performance, pedal feel, and pad wear.
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Article Date: Jan 17, 2008
Car Accociations: NEW_MINI
Hits: 2181
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