In a nutshell: which tyres for the Canadian Grand Prix?

Montreal, with its lovely environment and North American atmosphere, is one of Formula 1's most liked venues. But it's also one of the most unpredictable races of the year.

Pirelli has nominated for Canada the same three compounds it offered in Monte Carlo - the supersoft, ultrasoft and hypersoft - but that's the only common denominator between the two events given the Circuit Gilles Villeneuve's big tyre demands induced by its high-speed layout and various corners.

"While Monaco was the first appearance for the new hypersoft, we can almost consider Montreal to be the real debut for this tyre, as Monaco is completely atypical," explains Mario Isola, Pirelli's F1 boss.

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"The track surface at Montreal is actually quite smooth, but we should still see more than one pit stop due to the combination of the softest tyre nomination that we have ever brought to Canada, and a more demanding track layout than Monaco.

"In the past, there has been an extremely wide variety of strategies seen at this race, and the arrival of the hypersoft should now open up those possibilities still further.

"In reality, nobody knows exactly how it will perform in Canada in terms of wear and degradation, so the homework done during free practice will be more important than ever."