The top two teams, Mercedes and Ferrari have both elected to use medium tyres at the Mexican Grand Prix next weekend. The two teams have chosen eight or more of the softest tyres available for the majority of races this year but will take just seven to the next race in Mexico. However, this isn't the same for all the drivers on these teams, as Valtteri Bottas has an additional set of hard tyres instead of a set of medium tyres.  As a result, Mercedes will be able to try out the hard tyres during the practice sessions, something which they didn't do at the previous race in Japan.  Elsewhere, Aston Martin Red Bull Racing  have decided that they will use nine sets of...
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