DIFFERENCE OF BRAKE PAD COMPOUNDS
ROAD CAR COMPOUNDS
Ceramics are known to be one of the most vital and essential compounds that influence braking capacity. Each material has been carefully chosen for the MX72 in order to produce minimal noise and dust while producing high friction at lower temperatures. The MX72 actually decreases rotor wear. Even pedal feel, which is already typically great with semi-metallic material pads, was further improved upon. The MX72 is the ultimate, dual-purpose street and light track compound.
Rotor temperature: 50-700C Average
Friction coefficient: 0.37 – 0.47
Material: Semi-metallic (Ceramic Carbon Metal)
Driving fields: Street – Winding – Light track
MX-72 Plus is focused on circuit driving. This compound provides stable performance throughout the low and high temperatures ranges. Offering good control and consistent pedal release throughout braking. A step up from the MX-72 compound, MX-72 Plus is a great well rounded pad that offers an increased advantage on cars running street radial tires for the race track.
Rotor temperature: 50-750C Average
Friction coefficient: 0.39 – 0.47
Material: Semi-metallic (ceramic carbon metal)
Driving fields: Street-Circuit
A strong step up from the MX72 and MX72Plus compounds. CC-Rg straddles the line between aggressive street use and track day use with an emphasis more towards track use compared to other street compounds. But due to its ability to maintain a high initial bite across a wider temperature range, particularly on the low temperature side, the CC-Rg can still be used on the street if the driver does not mind noise. Offers good modulation and works well with OEM ABS units under aggressive conditions.
Rotor temperature: 50-800C Average
Friction coefficient: 0.38 – 0.45
Material: Semi Metallic
Driving fields: Track day
SPRINT RACE COMPOUNDS
In addition to dominating the Japanese domestic racing scene. Endless is also fiercely competitive in many worldwide motorsports categories. Developmental feedback and high praise from partner teams in various motorsports categories have allowed us to release a highly-regarded selection of race compounds to the public domain of race-oriented end-users. When compared to professional race applications in terms of weight and brake cooling capabilities, braking for tuned cars within the amateur race realm can potentially be more strenuous and demanding. Due to these conditions we have released our professional racing compounds to the public in order to facilitate performance needs on the track. Brief descriptions of popular race compounds available to the public are listed below.
Sprint race brake pads offer a wide range of friction coefficients and torque curves for various driver preferences. In order to chose the best friction material, the car weight and chassis balance must be taken into consideration. Other factors to consider are the tires to be used with them, the road conditions of the circuit to be raced on and temperatures if they are known.
For light-weight cars and FF cars, we primary recommendations to start with would be ME20 or MS25/20. Taking the tires into consideration, if tire grip and road surface grip are known to be high our recommendation would be to start with N35S and make any adjustments as needed once a base line is established. For World Touring Car Championship style races we would select compounds with a high initial response. Compounds that offer good control while maintaining brake efficiency is preferred, in situations like this S580, S33O and other high initial bite compounds are recommended for the front.
For GT cars including GT3 cars our initial recommendations would usually be N35S, MS35/40, S41S based on the presumption of high down force and the need to select compounds best suited for heavy brake loads. When circuit conditions call for particularly higher brake loads the S41S, W003, or other higher friction more specialized compounds are required.
In terms of continuity with road surface conditions and ABS units the more mild and very stable characteristics of the ME20 would be best suited.
In cases where rear wheel lock may be an issue or for the rear of FF cars a more mild, slightly lower friction compounds specially designed to avoid rear lockup issues are available.
For the rear of FF setup cars recommended compounds include, but are not limited to NC44 and S55G or T47G for other cars depending on the load.
※MS20 and ML20A can also be used for the front if the load is suitable. They feature high controllability.
After trying the recommended compounds as listed above you are still not finding a good match we can provide further recommendations based on your specific needs. Collecting as much data as possible is critical in making adjustments to the brakes. Temperature data is a key factor in diagnosing any issues, examining the rotor and brake pad surfaces and any other feedback will play a key part in helping you to find the right compound that works best for you.
ME20 (Semi Metallic)
Average Friction0.45 - 0.52, Temperature Range150 - 800 Celsius
Developed as a Competition Sprint Race pad, though slightly milder, ME20 exhibits stable performance and good heat resistance offering low wear suitable for both front and rear applications. Compatible and works well with stock or racing ABS units.
ENDURANCE RACE COMPOUNDS
In endurance races, not only must you match with the features of the brakes, but how you will run the entire race distance is also a big issue. In cases of 4 or 6 hour races, it is generally presumed that the brakes will not be changed, but in longer races like 12 or 24 hour ones, planning the number of times you will change the brakes also changes the required type of friction properties, while on the other hand brake features are more important to pursue, making it necessary to compromise.
MA45B and YZ080 are ENDLESS's popular endurance race friction materials.
MA45B is a semi-metallic material and is often used in endurance races in light cars and cars with good chassis balance. It first earned its reputation as a pad which could run the Nürburgring 24 hour race without changing the brakes in the Porsche cup car, etc., and even now it is favored by many Porsche users. As it demonstrates stable function even in races with relatively high loads and has superior friction properties it is used in many GT cars, while in 12 or 24 hour races it cedes this spot to YZ080. YZ080 is a sintered compound material which, although it has a low absolute friction coefficient, it has a sharp initial response and possesses features which are suitable for braking in long-distance races. Coupled with its superior friction properties, this makes it widely used in GT3/GTE cars.
In GT cars where rear wheel lock is a concern, you can use MS20 or ML40A as well, the same as with sprint races.
Semi-metallic materials made for higher loads such as ML35A/40A are suitable for race distances of 5-8 hours and in high load conditions.
The friction speed of a pad will change depending on changes in various conditions such as circuit layout, tires used, air temperature, etc. If considering use in endurance races, it is essential to do tests in advance, etc., to calculate amounts of friction and prepare the required number of pads before racing.
Lower MS20 < MA45B < MS25 < ME20 < N35S < N30C Higher
Lower MS20 < MA45B < MS25 < ME20 < N35S < N30C Higher
Long MA45B > MS25 = ME20 = N35S > MS20 Short
CARBON CERAMIC ROTOR COMPOUNDS
In recent years, an increasing number of sports cars have been coming equipped with Carbon Ceramic Discs from the factory. Applications such as the Porsche PCCB (Porsche Ceramic Composite Brake), the Ferrari CCM (Carbon Ceramic Matrix) and the Nissan GT-R Spec-V NCCB (Nissan Carbon Ceramic Brake) are increasingly being more widely adopted as standard options. In addition to the reduced unsprung weight, the Ceramic Rotors offer stable braking performance and exponentially increased bite. While these rotors offer increased performance, they do come with drawbacks such as increased wear of the rotors and OEM brake pads as a result of increased heat caused by the higher initial bite these brakes tend to offer. Due to the high costs associated with replacing rotors, many drivers tend to replace them with heavier cast iron rotors for circuit use. In response to these issues ENDLESS began development on a specialized line of brake pads in 2003 and after six years of development and testing completed two specialized compounds which demonstrate high-level performance even when used at the track. The W007 and W008 for track and street use respectively were born.
W007 (Semi Metallic; Carbon Ceramic Rotor pads)
Average Friction: 0.45 - 0.50
Temperature Range: 300 - 800 Celsius
Circuit use only. Designed specifically for use with Brembo S.G.L CCM (Carbon Ceramic Matrix), Porsche PCCB, and Nissan GT-R Spec V (NCCB) disks. This brake compound has really good heat resistance and is very kind towards Carbon Ceramic disks. Development and testing was done on the Nurburgring circuit. Thermo-paint is definitely recommended for the brake rotors as this brake pad has really good heat resistance to match the heat capacity of CCM Rotors.
W008 (Semi Metallic; Carbon Ceramic Rotor pads)
Average Friction: 0.40 - 0.45
Temperature Range: 150 - 700 Celsius
OEM Brake pads for the Brembo S.G.L CCM, Porsche PCCB, Nissan NCCB system have been deemed to have certain weak points in pad wear, and temperature resistance. The W008 was born from the W007, and can be used for street, and circuit use. This pad has good heat resistance, pad wear, anti-fade characteristics, and pedal feeling. This pad requires the use of OEM anti-noise shims on the Nurburgring circuit. Thermo-paint is definitely recommended for the brake rotors as this brake pad has really good heat resistance to match the heat capacity of CCM Rotors.