toyo Toyo Tires provide the spec tire for the Spec E46 racing class.  Current dry racing tire is the Toyo Proxes RR in 255/40R17.  The rain tire is the Toyo Proxes RA1 in 235/40R17.

Contingency Info: Racers Guide (pdf)NASA Regional Toyo Contingency (PDF), NASA Championship Toyo Contingency (PDF), BMW CCA CR Toyo Contingency (PDF)

BimmerWorld BimmerWorld is a great source of all the spec required parts for your SE46 race car.  They carry the spec Magnaflow exhaust, MCS suspension, Epic tune, and every other part you may need for your race car.  Additionally they support the class through a generous contingency program.

Contingency Info: BimmerWorld Regional SE46 Contingency (pdf)

Epic Epic Motorsports provides the spec tune required by all Spec E46 cars.  This great tune helps transform your car into a true racer, while maintaining great reliability.  Epic Motorsports is an avid participant in BMW club racing and support the class through their contingency program.

Contingency Info: Epic Motorsports NASA Championships Contingency (pdf)

Red Line Oil

Red Line Oil produces lubricants specifically formulated for use in race environments.  Their product lines cover everything from engine oil to differential lube to their well known Water Wetter coolant additive.  Red Line is a strong supporter of the SE46 class and provides a contingency program.

Contingency Info: Red Line Oil Regional Racing Contingency (pdf)

Motion Motion Motorsport designs and builds the world’s best race seat mounting solutions for the independent racer and motorsports enthusiast.  Their unique side mounts and floor mount solutions allow for unlimited mounting locations for your race seat.  They are proud to offer special discount pricing for Spec E46 racers, email sales@motionmotorsport.net for details.
DiffsOnline Diffsonline can provide you with a performance BMW differential to suit your exact needs. Every differential is built to your exact specifications in their shop, and shipped to your door.  Diffsonline is very familiar with the Spec E46 class and can set you up with a limited slip and gear set made for this racing class.  They also support the sport through a contingency program.

Contingency Info: Diffsonline NASA National Championship Contingency (pdf)


Tilton Engineering make a great clutch and flywheel kit for the M54 engine found in the Spec E46 race car.  Its low mass and easy modulation make for easier rev matching, which results in faster and smoother shifting.  They also support the class through a contingency program.

Contingency Info: Tilton Engineering NASA National Championship Contingency (pdf)