Rohana Wheels - Performance Racing Wheels and Rims. Rohana Wheels has over 15 years of experience in the aftermarket wheel industry. They strive to provide the highest level of quality and excellence for their products. Exceptional knowledge and solid experience allows Rohana to develop innovative designs. Rohana wheels offers three levels of concavity, which vary on the width. Width is available from 8.5 up to 12 inches. Standard, Mid concave and Deep Concave styles are available. Rohana RF Series: The RF Series Wheels are the latest products in their line to be constructed with their new Rotary Forming manufacturing process. This technique employs 3 hydraulic rollers, with pressure and heat, to stretch the barrel of the wheel to the specified diameter. While the wheel spins, the rollers stretch and compress the alloy, enhancing overall structural rigidity and durability of the wheel. This method of wheel manufacturing results in a dramatic reduction in weight in a uniform and natural manner. Rohana RC Series: The RC Series carries the most concave designs, utilizing three concavities per wheel model. Rohana Wheels’ engineers took an additional step to ensure each vehicle is able to utilize the most concave face profile without interfering with brake clearances. Each design available features spoke arrangements that not only accentuate the depth of the wheel, but also is engineered with strength and durability to outperform even the most spirited drivers.