Porsche’s wheels are made from braided carbon-fibre reinforced polymer – 11 miles of the stuff goes into each wheel. The fibres are braided on what Porsche says is the world’s largest carbon braiding machine (9m in diameter!) to form the rim base of each wheel.
The wheel centres are made from carbon-fibre fabric cut into 200 individual pieces per wheel. Once it’s all assembled, each wheel is impregnated with resin and pre-hardened at high pressure. Then it is hardened at high temperatures followed by a long cooling process before getting its protective coat of clear lacquer.
Why bother? Weight and strength of course. Porsche says that the wheels weigh 8.5kg less than the Turbo’s forged alloy wheels, for an overall reduction in unsprung wheel weight of 20 per cent – along with 20 per cent more wheel rigidity.