Original sentence: (see the full text of both letters).Following several tyre failures, most spectacularly on Ralf Schumacher's Toyota during Friday practice, Michelin advised its seven customer teams that they could not safely race.He addressed several solutions which had been proposed by the teams, insisting that use of the tyres flown in that night would result in severe penalties, and the placement of a chicane in the turn was "out of the question" - the race would not be sanctioned by the FIA (a non-championship race) if a the track layout was changed.He deemed the Michelin teams' proposals to be "grossly unfair" to the Bridgestone teams.The FIA refused to allow new tyres to be flown in or a chicane to be installed, mostly on grounds that such rule changes would be grossly unfair to the Bridgestone teams, who had come prepared with the properly working tyres.The Michelin teams, unable to come to a compromise with the FIA, did not participate in the race on safety grounds.Whiting replied on June 19, expressing his surprise that Michelin had not brought along a second set of tyres (It's worthy to note that tyre suppliers almost never bring a extra set of inferior dry tyres to a Grand Prix), suggesting that the teams be informed of the maximum safe speed in turn 13, and offered to monitor turn 13 and penalising any excess speed on the Michelin cars
Edited sentence: Following several tyre failures, most spectacularly on Ralf Schumacher's Toyota during Friday practice, Michelin advised its six customer teams that they could not safely race.He addressed several solutions which had been proposed by the teams, insisting that use of the tyres flown in that night would result in severe penalties, and the placement of a chicane in the turn was "out of the question" (see the full text of both letters).The FIA refused to allow new tyres to be flown in or a chicane to be installed, and the teams, unable to come to a compromise, did not participate in the race on safety grounds.Whiting replied on June 19, expressing his surprise that Michelin had not brought along a second set of tyres, and suggesting that the teams be informed of the maximum safe speed in Turn 13