Performance
Brake System for BMW
a new way of looking at performance braking -
"sized right" is better than "bigger"
Rotors
|
Rotors
used for these applications: |
|
chassis |
years
|
models |
| 5-series |
E28, E34 |
1982-1995 |
540, 535, 530, 525 |
| M5 |
E28, E34 |
1987-1995 |
3.5l, 3.6l, 3.8l |
| 6-series |
E24 |
1982-1990 |
635CSi |
| M6 |
E24 |
1984-1990 |
3.5l, 3.6l |
| 7-series |
E32, E38 |
1987-2001 |
750, 740, 735, 728 |
| 8-series |
E31 |
1990-1995 |
850CSi, 850i/Ci, 840i/Ci |
|
We use different types of
rotors in our brake kits, which vary by type of use.
 |
2-piece front
rotors
[ CLICK HERE FOR MORE DETAILS ]
Suitable for street, track/HPDE, and race
use. Built with an aluminum center section and
directionally vented and slotted iron disk. These
combine affordable price, universal replacement sourcing, and
excellent thermal characteristics.
Silver finish, slotted style only. |
|
 |
1-piece rear
rotors
[ CLICK HERE FOR MORE DETAILS ]
Suitable for street, track, or race use.
Directionally vented and slotted iron disk. These
combine affordable price, universal replacement sourcing, and
excellent thermal characteristics.
Silver finish, slotted style only. |
2-piece
front rotors
2-piece rotors are genuine BMW components
from the E50 chassis 550i. BMW builds these with an aluminum
center section for weight reduction and a generous 348mm disk that
allows fitment within 17" wheels. They are uitable for
street, track/HPDE, and race use. These combine affordable
price, universal replacement sourcing, and excellent thermal
characteristics.
These rotors are rotors are slotted, silver plated, and
manufactured in Germany to BMW standards.
| click any picture for a
bigger view: |
|
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1-piece
rear rotors
1-piece rotors are an excellent entry-level
option suitable for street, track/HPDE, and race use. These
combine affordable price, universal replacement sourcing, and
excellent thermal characteristics.
These rotors are rotors are slotted, black plated, and manufactured
using the best techniques and materials.
Slotting: there are many reasons to slot rotors.
Primarily, slotting aids in removal of water and debris on the rotor
surface, evacuation of hot pad "off gassing" vapor, and
provides a visual wear indicator.
  |
Details: These slots do not
extend all the way to the edge of the rotor for a very
specific reason; this maintains the structural integrity of
the rotor. Other brands with slots all the way to the
end have created "stress risers" where cracking may
develop. No such problem exists with this design.
Additionally, directional slotting enhances effectiveness. |
 |
NO DRILLING! Drilled holes
in rotors often used for "show" are prone to
cracking and catastrophic failure. The holes create
stress risers which will lead to this sort of failure.
Additionally, drilled holes do not improve cooling,
rotary-vane rotors lose efficiency when drilled because
cooling air does not not pass through the rotor
circumferentially but is instead prematurely evacuated by the
holes.. |
 |
Plating: Multi-stage plating resists
unsightly corrosion on the rotor hub and unswept areas of
the rotor face. |
Precision: due to the ultra-precise
tolerances used for run-out, parallelism, and surface flatness,
absolutely no pre-installation machining is required for smooth
operation without vibration or shimmy.
Manufacturing details:
- Meets SAE standards for brake rotor iron.
- Alloying: Copper and Chromium added to achieve
specific hardness and tensile strength.
- Precision-controlled cooling during the casting
process creates a uniform distribution of graphite flakes, thus
increasing wear resistance and the ability to dissipate heat. In
contrast, premature cooling of cast iron can cause iron brittleness,
thus making the brake rotor more likely to warp or crack, especially
when overheated under hard braking conditions.
- Run-out less than .004".
- Parallelism of machined surfaces within
.0005" tolerance.
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