Pirelli gave a glimpse into Formula 1's potential future on Wednesday when the Italian manufacturer unveiled a concept for 18-inch tyres. F1 cars currently run on 13-inch wheel rims but the sport's sole tyre supplier have used the second day of this week's Silverstone test to showcase an experimental larger wheel and tyre size, with such low-profile rubber now prominent on road cars.Lotus, who have Charles Pic in their E22 on Day Two, are completing the demonstration as part of the one day of running they have to give over to Pirelli across F1's in-season test programme.Speaking to Sky Sports News, Pirelli's motorsport director Paul Hembery said the tyre firm were simply giving the sport's...
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