Lance Stroll reckons the decision not to change his ultrasoft tyres was the reason behind his latest failure to reach Q2.
The Canadian, racing at his home grand prix for the first time, qualfied P17 on the grid while team-mate Felipe Massa is 10 place ups the road in P7.
“We went out at the beginning and stayed on the same set of tyres the whole session,” Stroll explained.
“I felt the grip was getting better, but I think the track was just improving.”
“I think the decision not to pit for new tyres towards the end of Q1 had a bit to do with me not getting through, but it is too hard to say.
"You can always look back afterwards and say we should have done this and we should have done that, but we are in the position we are in.”