Brembo Prime Rear Brake Pad Set for Audi A4, A5, Q5, S4, S5, SQ5, and allroad (2008–2017)

Brembo P85099 is a rear disc brake pad set from the Prime line that replaces the rear friction pads on the Audi A4, A5, Q5, S4, S5, SQ5, and allroad. The pads use a semi-metallic compound. Brembo offers the Prime range as an OE-equivalent replacement for drivers who want a correct factory-style fit. The set comes with the rear pads, brake pad retaining clips, and new hardware, so the clips that hold the pads in place are renewed at the same time as the friction material. The whole Prime range is fully ECE R90 homologated, the European approval standard for replacement brake linings, and this set is made in Romania.

Brake pads clamp against the rotor to turn the car's motion into heat, and the friction compound wears down a little with every stop. P85099 cross-references a long run of Audi factory numbers: 8K0698451A, 8K0698451B, 8K0698451C, 8K0698451F, 8K0098601, 8K0098601A, 8K0098601E, 8K0098601F, 8K0698601, and 8K0698601A. Those numbers cover several revisions of the Audi rear pad. If one of them is on your old pad box or a parts invoice, that is a quick way to confirm you have the right set. Brembo built its first business on brake discs, and it designs its pads to keep brake dust low, which helps keep wheels cleaner between washes.

Brembo started in 1961 as a small family-run workshop in Paladina, near Bergamo, Italy. It began making brake discs in 1964 and has supplied brakes for Ferrari's Formula 1 cars since 1975. Brembo runs its quality management system to ISO 9001 and IATF 16949. For its pads, Brembo controls every production stage: development, testing, making the friction compound, and mechanical processing.

Technical Details

• Manufacturer: Brembo
• Part number: P85099
• Product line: Brembo Prime
• Position: rear axle
• Friction compound: semi-metallic
• Included: rear disc brake pads, brake pad retaining clips, and new hardware
• Homologation: ECE R90
• Country of manufacture: Romania
• Audi cross-references: 8K0698451A, 8K0698451B, 8K0698451C, 8K0698451F, 8K0098601, 8K0098601A, 8K0098601E, 8K0098601F, 8K0698601, and 8K0698601A

Common Questions

Will this set work on the front brakes?
No. P85099 is a rear-axle set only. Order front pads separately if both axles need service.

What signs point to worn rear pads?
Grinding, squeaking, pulsating, rotor glazing or hot spots, and a noticeable lip on the rotor's outer edge are the common signs. Check pad thickness at oil changes against Audi's stated minimum, because pads run past that point can damage the rotor.

Is new hardware part of the set?
Yes. Brake pad retaining clips and new hardware come with the pads.

PMB Performance brings more than 20 years of European parts experience to every Brembo brake order.

Fitment & Compatibility

Check the fitment table below for the Audi models and years this set fits. This is a rear-axle set, so make sure you are ordering pads for the rear brakes. Send us your VIN and we will confirm fit before you order.