F1 will probably stick to 13-inch tyres, opines Pirelli’s Hembery
During the Monaco Grand Prix, both Pirelli and Michelin demonstrated prototype 18-inch tyres for single-seat race cars. The GP2 rubber that Pirelli showed off was developed in part to demonstrate the tyre maker’s ability to adapt to future changes in regulations, including a possible switch to a wider diameter, low profile tyre in Formula One. But although Pirelli is ready to offer the top-flight championship such as tyre, Pirelli motorsport director Paul Hembery seems less than confident that the FIA will approve an 18-inch size for F1.