R1 Concepts 2551-2221-00 Disc Brake Pad Set - Rear

Rear Brake Pads for GR Supra, 330i, and Z4

R1 Concepts R1 Optimum OE Pads, part number 2551-2221-00, are rear disc brake pads for select Toyota and BMW applications. This pad set is listed for the rear axle on the 2020-2024 Toyota GR Supra, 2019-2020 BMW 330i, 2019-2020 BMW 330i xDrive, and 2019-2020 BMW Z4.

Key Features

• Rear disc brake pad set for confirmed OE-style fitment
• R1 Optimum OE Pads product line from R1 Concepts
• Fits 2020-2024 Toyota GR Supra, rear
• Fits 2019-2020 BMW 330i, rear
• Fits 2019-2020 BMW 330i xDrive, rear
• Fits 2019-2020 BMW Z4, rear
• Part number 2551-2221-00 for ordering and catalog matching

Product Details

The R1 Optimum OE Pads line is positioned as an OE-style brake pad solution for drivers replacing rear pads on the Toyota GR Supra, BMW 330i, BMW 330i xDrive, or BMW Z4. Part number 2551-2221-00 is cataloged as a rear disc brake pad set and should be matched to the vehicle’s rear brake application before purchase. This part cross-references Monroe Shocks & Struts (e.g., 172286) for the same application.

Common Brake Issues Addressed

• Rear brake pad wear
• Squealing or noise from worn pads
• Reduced braking response from thin friction material
• Uneven rear brake performance
• Brake service needs on OE-style replacement intervals

Installation Notes

Verify rear axle fitment by year, make, and model before installation. Confirm sensor requirements for your vehicle, as the fitment notes specify sensor BPS-31083 (1) for listed applications. Inspect rotors, calipers, and related brake components during service, and follow the vehicle manufacturer’s brake service procedure.

Quality Assurance

R1 Concepts catalogs this part within its R1 Optimum OE Pads line for direct rear brake replacement on the listed Toyota and BMW applications. Use the confirmed fitment data for 2020-2024 Toyota GR Supra, 2019-2020 BMW 330i, 2019-2020 BMW 330i xDrive, and 2019-2020 BMW Z4 when selecting replacement pads.