If you are wondering which direction straight vane rotors and directional rotors need to be installed, visit R1 Concepts to learn more today!
Straight Vanes
On most vehicles, the factory brake rotors are usually straight vane rotors. This means the vane structure (internal) of the rotors are built straight from the center going outwards. Thus, if you have a straight vane rotor, the direction of the slots or holes is completely up to the buyer.
Directional Vanes
There are also a handful of cars that do come with directional rotors. Directional rotors have curved or an angled internal vane structure. For directional rotors, it is recommended to install the rotors based on internal vane structure and not on the direction of the slots or holes. This allows the rotor to “naturally” generate a vacuum effect that will pump air throughout the rotor which helps its cooling efficiency.
Exceptions to the Rule
There are some vehicles has the same factory directional rotors all around. Thus, you may have all right or left directional vanes all around.
For example, the Mini Cooper S has 4 LEFT directional vane rotors. That may not be obvious with the OEM Blank rotors, but if you take a look at the internal structure, that would stand true. The Mini Cooper S is equipped that way from the factory, and at R1 Concepts we follow OEM standards.
Other vehicles may have the same directional vane rotors for the driver and passenger side include but not limited to some Mercedes, Porsche, and the Chevrolet Corvette Z06.