Christian Horner says Red Bull rejected Pirelli approach for fear of breaking rules
Team Principal says World Champions were asked to test tyres
Friday 7 June 2013 23:37, UK
Christian Horner has revealed Red Bull were approached by Pirelli to carry out an in-season test but rejected the opportunity as they felt it would have been in breach of the Sporting Regulations.
The fact that Mercedes' tyre test appeared to have been carried out in secret also angered Horner. "I think the lack of transparency has been disappointing," he said. "If a supplier has issues then they obviously have to deal with them, but if all entrants are supposedly equal, I think it is important that that information is made perfectly clear."