Pirelli put plans to test new race tires at next month 's Canadian Grand Prix on hold . Each of the 11 teams will instead try out development tires in the first practice session . Ferrari wants to change tires to stop delaminations . `` However , the performance and wear characteristics of the new tire will not be significantly different , with the aim of keeping up the spectacle and retaining a strategic element to all the races . '' Mercedes face an FIA investigation over involvement in the accident .
Pirelli put plans to test new race tires at next month 's Canadian Grand Prix on hold . Each of the 11 teams will instead try out development tires in the first practice session . Ferrari wants to change tires to stop delaminations . Mercedes face an FIA investigation over involvement in the accident .