American team Haas and French team Renault have opted not take any supersoft tyres to Montreal for the Canadian Grand Prix.
Haas duo Romain Grosjean and Esteban Gutierrez will be on the same tyre strategy, with each of them taking three soft compounds and ten ultras.
Renault duo Kevin Magnussen and Jolyon Palmer went a different route, choosing five soft tyres and eight ultrasoft tyres each.
Moving further up for grid, Championship favourites Lewis Hamilton and Nico Rosberg have chosen two sets of supersofts each and eight sets of ultras.
Ferrari went for a similar strategy but opted to take two extra sets of supersofts rather than extra ultras, while Red Bull opted for two extra sets of softs rather than supersofts.