Endless Brake Pads for B8 Audi S4
Endless’s Brake Pads for B8 Audi S4 suit the supercharged 3.0-liter S4 that went into production in November 2008 and reached the US for the 2010 model year, staying on sale through 2016. Endless lists the 345mm front-disc brake across the whole run, B8 and facelifted B8.5 alike, with EIP208 at the front, a shape it also lists for Mercedes-Benz W212 and C207 models, and EIP149 at the rear. A tuned S4 can arrive at the end of a straight far faster than stock, so for one that sees track days we would fit CC-Rg; MX72 suits a quick road car.
Features
- Endless pad shapes EIP208 front and EIP149 rear, for the 345mm front-disc brakes
- Four street compounds, from the low-dust SSM Plus to the track-ready CC-Rg
- Racing options: a Racing Group of fifteen compounds, W003 and S330
- All seven compound options offered front, rear or as a Front and Rear Set
Choosing a Compound
If a B8 S4 has been tuned, the extra speed shows up first in the brakes. On a stock or lightly modified car used on the road, SSM Plus or MX72 is enough, with SSM Plus the quieter of the two. MX72 Plus suits a few track days a year on street tires, CC-Rg suits a tuned car that laps often, and the racing compounds suit an S4 built for competition. Endless does not make SSS or price MA45B for these shapes.
Every figure below is Endless’s own. Friction is the compound’s average friction coefficient, so a higher number gives more bite for the same pedal pressure. The rotor range is the band of rotor temperatures Endless designs the compound to work in, so choose by the temperatures your car will see.
Street and street-to-track compounds
- SSM Plus (street): non-asbestos; friction 0.33-0.40; rotor range 0-550C (32-1022F). Low dust, low noise and long life. Braking builds with pedal pressure rather than a sharp first bite, for drivers who want clean wheels and a quiet car.
- MX72 (street to light track): ceramic carbon metal; friction 0.37-0.47; rotor range 50-700C (122-1292F). Minimal noise and dust, strong friction at low temperatures, reduced rotor wear and a better pedal feel than a typical semi-metallic pad. Endless’s dual-duty compound for a road car that sees the occasional track day.
- MX72 Plus (street to circuit): ceramic carbon metal; friction 0.39-0.47; rotor range 50-750C (122-1382F). Holds its braking force to higher temperatures than MX72, with stable control and a consistent pedal release. Endless aims it at cars on street tires that run on track.
- CC-Rg (track day, street capable): ceramic carbon metal; friction 0.38-0.45; rotor range 50-800C (122-1472F). High initial bite across a wide temperature range, even when cold, and modulation that works with the factory ABS under hard use. Endless notes it is noisy on the street; it is the step up from MX72 Plus for regular track days.
Racing compounds
Each option below is one choice in the Choose Compound menu. For a group, name your compound in the order notes and Bulletproof Automotive confirms it with your order. Every racing compound needs Endless’s bedding procedure: at 70 to 80 percent of normal pedal effort, bring the rotors gradually to 400C (752F), then let them cool below 150C (302F) before hard use.
Racing Group
- ME22: dual braking style; friction 0.33-0.38; rotor range 150-800C (302-1472F). Developed from ME20 with lower friction for control, for light to mid-weight cars or heavier cars on slower circuits. Endless rates it for street and track.
- ME20: trail-braking style; rotor range 150-800C (302-1472F). High, stable friction at high temperature with low wear, developed for touring cars and rally. Works front or rear, with stock or racing ABS.
- N35S: trail-braking style; rotor range 300-800C (572-1472F). Quick, sharp and responsive, with stable modulation under high temperature and load. Endless’s flagship rally compound, also run in FIA GT, and its suggested starting point for drivers new to Endless racing pads.
- N05U: trail-braking style; friction 0.46-0.53; rotor range 300-800C (572-1472F). More bite than N35S, popular in sprint-focused Porsche Cup cars.
- N05S: trail-braking style; friction 0.45-0.53; rotor range 300-800C (572-1472F). Immediate high friction with little pedal effort, used in Japanese rally cars without brake boosters and in European and Australian sprint racing.
- N30C: friction 0.50-0.60; rotor range 300-800C (572-1472F). High initial bite, gentle on rotors and low wear. A rally compound for cars without a brake booster.
- MS20: friction 0.32-0.38; rotor range 150-800C (302-1472F). A low-friction rear pad with a flat torque curve and long life, for club racing cars.
- MS25: friction 0.36-0.42; rotor range 150-800C (302-1472F). Warms up gradually even under heavy braking. Endless pairs it with a higher-friction pad to prevent lock-up.
- MS35: friction 0.45-0.53; rotor range 300-800C (572-1472F). Mid to high initial bite with good modulation and control, a sprint pad for a wide range of conditions.
- ML20A: friction 0.30-0.33; rotor range 300-800C (572-1472F). A rear compound with lower initial bite to prevent rear lock-up, for lightweight GT cars.
- ML35A: friction 0.30-0.38; rotor range 300-800C (572-1472F). Slightly lower friction with excellent modulation and wear, for lighter GT cars.
- ML40A: friction 0.32-0.47; rotor range 300-800C (572-1472F). Moderate friction that resists lock-up, an endurance compound.
- S55G: Endless publishes no figures. It suits lightweight and front-wheel-drive cars, and the rear of front-wheel-drive cars, with high controllability.
- PC35: Endless publishes no figures. More bite than N35S with high braking force and a stable pedal; Endless’s base pad for rally raid.
- S41S: Endless publishes no figures. Developed for GT cars, including GT3, under high brake loads.
Sold as their own options
- W003: trail-braking style; friction 0.40-0.45. Similar in character to N35S with better wear, tough and stable at high temperature with a linear torque curve; run in rally, touring cars, ALMS and PWC. Circuit only: Endless does not recommend it for the street and notes high rotor wear when cold.
- S330: trail-braking style; friction 0.60-0.70; rotor range 300-850C (572-1562F). High friction for sprint racing, with good control at high levels and without accelerating rotor wear; run in Super GT, stock cars and GT2 and GT3 sprint racing.
Applications
- Audi S4: B8 | 2008-2016 | 3.0L supercharged V6
Notes
- Each Front or Rear set of Brake Pads for B8 S4s covers both wheels on one axle
- A US S4 of the 2008 or 2009 model year is a B7, which takes a different Endless front pad
- Not for the B9 S4, which Endless does not list for these shapes
- For the factory calipers; an S4 converted to an aftermarket big brake kit takes the pads for those calipers
Frequently Asked Questions
- Do the Endless Brake Pads for B8 fit the facelifted B8.5 S4? Yes. Endless lists EIP208 front and EIP149 rear for the S4 from 2008 to 2015, a span that includes the facelift, and the 345mm front discs carried on to the final 2016 cars. These Brake Pads for B8 sedans and Avants therefore fit any B8 or B8.5 S4 on its factory brakes.
- Which US model years take these pads? In the US the B8 S4 was sold from the 2010 to the 2016 model year. A 2008 S4 there is a B7, and the 2009 S4 was the B7 Cabriolet, so both take the EIP205 front pad instead. Production began in Europe late in 2008, which is why Endless starts its listing that year.
- Which compound suits a tuned S4 on track? CC-Rg is our choice for a tuned S4 that laps often. Endless rates it to 800C, or 1472F, with high bite across a wide range and modulation that works with the factory ABS, though it is noisy on the street. For occasional track days on a stock car, MX72 Plus, rated to 750C, or 1382F, is the gentler option.
- Does the rear pad match the earlier S4? Yes. Endless lists EIP149 at the rear of the B6, B7 and B8 S4, so only the front shape changes between generations. The B8 takes EIP208 at the front where the earlier cars take EIP205, and that front pad is what decides which listing is right for a given car.
- Will Endless street pads make my S4 dusty? No. Choose SSM Plus, which Endless rates for low dust, low noise and long life, or MX72, which Endless says keeps noise and dust to a minimum, and the wheels stay clean. Both suit an S4 that is washed often. CC-Rg and the racing compounds are built for heat rather than clean wheels.
About Endless
Endless is a Japanese brake manufacturer that designs everything in-house and manufactures domestically in Japan, holding surface accuracy to 1/1000mm under strict quality control. The company developed its own laminated sintered wire-mesh backing plate and ceramic carbon rotors, and it proves its parts in competition, running its own factory motorsport program and supplying winning teams across Japanese and European racing. From pads and slit rotors to forged and monobloc calipers, brake fluid, and lines, Endless builds braking systems trusted on both street and circuit.
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