Perez's crash to blame for no 'special' wing on RB20? Here is the reason

By seven kph behind at top speed on the straights. That's how much Max Verstappen is slower of his rivals driving Mercedes, Ferrari and McLaren. Much has been said about why the team decided not to introduce a special rear wing for low downforce circuits like Monza and Las Vegas. There is speculation among F1 fans that the cost of these wings couldn't fit under the cost cap because Sergio Perez's crashes this season is the reason for that. Is that correct?