BIRA Announces "Plus Option" For All Designs

11/07/00 - The Brake Improvement Research Association (BIRA) has announced to its membership the availability of its new "Plus Option" for all released designs.

BIRA has contracted with Coleman Machine Inc of Menominee MI to provide to BIRA members its Coleman multi-piece directional vane rotors as optional equipment to BIRA's System 1 and System 2 designs. These Coleman rotors are designed to be dimensional duplicates of the factory Audi rotors that BIRA uses in its designs.

BIRA System 1 uses the Audi A8 312x25mm rotor, while System 2 uses the 2000-S4 321x30mm rotor. These Coleman rotor designs will be direct replacements for the factory rotors, and can also be used independently from the BIRA designs.

BIRA's Plus Option is in response to member input for heavy-duty and track use rotors. Although BIRA has not found the stock rotors to be lacking in these applications, it is generally understood that the factory rotors were designed for street use and that the directionally-vaned Coleman rotors would be more capable for the heavy-duty demands of track lapping days. Further, the Coleman rotors offer the additional advantage of unsprung weight reduction as they are half the weight of Audi factory rotors (generally, 9 pounds for the Coleman rotors versus 18 pounds for the factory rotors).

On top of that, they certainly do look sharp!

BIRA's Plus Option is expected to cost members approximately $800 for a pair of directional-vane rotors, center hats, all hardware to bolt it together, including the optional mounting, balancing, and heat-treating. This cost represents approximately $550 more than the cost of the standard factory rotors.

BIRA will continue to offer all of its designs with the use of factory replacement rotors as standard equipment.

For more information on these and other BIRA offerings, please review the web site at http://www.bira.org

Photographs of the Coleman Replirotors

Comparison of stock neu-S4 versus Coleman S4 replirotor