• Are Radicals/Sports Prototypes allowed on a car track day? 25 March 2026 12:18 Updated Unfortunately, Radicals and Sports Prototypes are not permitted on Silverstone car track days. Related to Car Track Days Related articles • Can I use Slick Tyres? • Is my vehicle insured while I’m on track? • What are the noise restrictions? • Can I bring additional drivers and spectators? • Am I allowed a Passenger?