Were communications issues behind premium tyremakers share price drop?

Michelin’s predictions that market demand has been tough and will continue to be sluggish till at least the end of the year (see “Michelin predicts significant slowdown in car and truck tyre demand“ for further details) sent shockwaves through the financial markets. Shares started off bad, falling 6 per cent in early Paris trading to a seven-year low, but continued downwards and were down more than 9 per cent by mid-afternoon to 89.54 euros. Ultimately, shares in tyre manufacturers dropped by as much as 10 per cent on the day (Friday 19^th October 2018).