
E28 Brakes
Big Brake Kits
| Original Rotor Sizes (for reference) | ||
| BMW | OE Front Rotor Diameter | OE Front Rotor Thickness |
| 528e, 524tD, 533i | 284mm | 22mm |
| 535i, iS | 282mm | 25mm |
| Korman Kit | Front Rotor Diameter | Front Rotor Thickness | Caliper Type | Notes | P/N |
| 324mm Brake Conversion | 324mm | 30mm | 4 piston Brembo | 16" Wheels required | 34180112 |
| 332mm Brake Conversion | 332mm | 34mm | 4 piston Brembo Aluminum (As used on Ferrari F40) | 17" Wheels required, crossdrilled rotors | 34180111 |
| 345mm Brake Conversion | 345mm | 32mm | Ate 4 Piston | 17" Wheels required, rotors are directionally vented 2-piece with aluminum hats | 34180113 |
High Performance Rotors
Ate POWER DISC
528e, 533i, 524td front rotors P/N 3411P151655
535i, iS front rotors P/N 3411P156143
Korman High Performance Brake Rotors
Available in either a computer controlled crossdrilled version with the holes chamfered to the wear limit, or in a computer controlled gas slotted version with the gas ports milled to the wear limit. Our rotors are then finish plated with cadmium. While nothing beats the appearance of crossdrilled rotors, we suggest using the gas slotted versions for true high performance and track use due to superior wear rates and brake cooling. Please specify crossdrilled or gas slotted when ordering.
| BMW | Front Rotor | Rear Rotor |
| 528e, 533i, 524td | 3411D151655 | 3421D121387 |
| 535i, iS | 3411D156413 | 3421D121387 |
High Performance Brake Pads

Ferodo Performance Brake Pads
Developed as a non-asbestos street alternative. Formulated with metallic fibers and other inorganic substances that yield a high friction level with good resistance to fade and wear. This competition grade compound is completely suitable for normal street use as the friction level is affected very little by temperature.

Hawk High Performance Disc Brake Pads
Korman Endurance
Brake Pads
In our development of the 325 for IMSA Endurance Racing, we tested every brand name racing brake pad we could buy and then had some custom fabricated as nothing "off the shelf" would last. We finally found a custom material that was good enough to win the 24 Hours of Watkins Glen and both the Driver and Manufacturers IMSA Sport Class Endurance Championships. An added bonus is that they stop well under light street conditions, making them completely suitable for street/highway use as well as driving schools and Club Races. Sold on an exchange basis (we need your old backing plates back as cores)
Korman Racing
Brake Pads
Developed for use in our IMSA E30 M3's. Good enough to win both the drivers and the manufacturers IMSA Sport Class Endurance Championships. This pad material is a non-asbestos graphite/metallic formulation. Unlike some racing materials that work well only when hot, the broad coefficient of friction of these pads also enable them to work well under cool, light braking conditions. They are therefore ideal dual purpose pads for both street and club events.
| BMW | Ferodo | Hawk Blue | Hawk Black | Korman Endurance | Korman Racing | |||||
| Front | Rear | Front | Rear | Front | Rear | Front | Rear | Front | Rear | |
| 528e, 533i, 524td, 535i,iS | FDB256 | FDB296 | HB137BLUE | N/A | HB137BLK | N/A | KDB003F | KDB056R | KDR028F | KDR325R |
Don't forget new brake pad wear sensors!
Other Brake Components
Stainless Steel/Teflon Brake Lines
Essential for driving
schools and highly recommended for all high performance driving.
Provides stronger pedal, improved modulation under hard brake
usage. Eliminates expansion associated with rubber lines. Kit
includes a full set of 6 lines.
All E28 5 series P/N 34321056
Super Blue Racing Brake Fluid
A non-silicone high performance dot 4 brake fluid designed for the extreme demands of motor racing, yet perfectly suited for street applications. Sold in 1 liter cans.
P/N SUPERBLUE
| Super Blue | Dot 4 | |
| Dry Boiling Point | 536ºF | 414ºF |
| Wet Boiling Point | 392ºF | 279ºF |

© Korman Autoworks, Inc. 1997, 1998