FORMULA 43 WHEELS PORSCHE | BMW

Formula 43 modular wheel center sections use a Rotary Forged process that results in a superior tighter, circular grain structure. The
rotary forged center section begins life as a cylinder of billet. The billet is then heated and placed into a die in the rotary forging machine.
The die spins the billet at 300 RPM while the billet is pressed from above at a 5 degree angle. The material then flows in a circular pattern
into the die. The new forging is then heat treated, quenched and aged to T-6061 standards. The end result is a rotary forged center
section that has stiffer spoke dimensions, lighter weight and a quicker moment of inertia.

The Spin-Form process developed by Formula 43 is a specific method in spinning T-6061 aluminum circular sheets into 2 and 3-piece
rim-halves. The computer controlled German spinning machine uses four rollers to form the inner and outer rim-halves on tooling
designed in the shape of each rim-half. The Formula 43 method is a three step process:

(1) spinning the part.
(2) heating and aging the rims to T-6061 condition and
(3) re-calibrating the rim-half after heat treating to ensure a very low run-out of the part.

Along with the Formula 43 process, several changes to the rims have been made to better fit and perform with today's modern racing and
sports cars:

1. Improved safety bead on the both inner and outer rims to ensure proper seating of the tire and that the tire will stay mounted to the rim
in the event of impact or loss of air pressure.

2. Improved rim contour to help ease of tire mounting and bead seating.

3. Added material in specific areas of the rim-half for additional strength and stiffness.

4. Drop center contour updated for proper TPMS fitment and installation without having to add additional brackets or modifications.