Alcoa is supplying the
lightweight forged aluminium wheels used by the Ferrari
458 Italia which despite being 20-inch in size to
accommodate the big carbon-ceramic brakes weigh 10.3 kg
at the front and 11.5 kg at the rear.
The use of forged
aluminium wheel technology pioneered by Alcoa ensures
that the front wheel weighs just 10.3 kg (22.8 lbs),
while the rear wheel weighs 11.5 kg (25.3 lbs), a
significant saving compared to a typical cast aluminium
wheel and a result that is only achievable with a
forging process. These weights are all the more
remarkable in view of the sizes; wheel diameters are
increased to 20 inches to accommodate large
carbon-ceramic brake discs, and rim widths of 8.5 inches
(front) and 10.5 inches (rear) are required by the
latest generation of high performance tyres.
Lower wheel mass
decreases rotational inertia, meaning forged wheels
require less energy to spin up to speed during
acceleration. This also helps reduce the gyroscopic
effect of high speed rotation, improving steering
response and performance. The lightweight wheels also
improve grip, traction and braking resulting in better
vehicle control and a smoother ride, because Alcoa’s
wheels stay in contact with the road better than heavier
cast wheels.
“The weight saving
possible with Alcoa’s forged aluminium wheels helps to
achieve the sharp handling and steering response for
which Ferrari is famous,” says Victor Marquez, Vice
President and General Manager, Alcoa Auto Wheels. “As
well as styling freedom, Alcoa’s forged wheels offer a
quick-to-market, cost-effective weight reduction,”
explains Marquez. “We are able to provide new wheel
programs rapidly to meet vehicle launch schedules.”
Alcoa is building a
growing number of relationships with OEMs worldwide; its
relationship with Ferrari has been built up over several
model generations, of which the 458 application is the
latest. Wheels for the new Ferrari are forged at Alcoa’s
Cleveland, Ohio (US) Works Plant.