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Tim McGraw was pushed to the brink while filming Taylor Sheridan's Western drama "1883."

The country music superstar revealed that the brutal production schedule left him questioning how much longer he could keep going. Between 14-hour shooting days, six-day workweeks and late-night flights for concert performances, McGraw said the grueling experience was unlike anything he and his wife, Faith Hill , had faced before.

"If it had gone on any longer, I probably wouldn't have survived, put it that way," McGraw told Esquire.

MATTHEW MCCONAUGHEY GIVES UPDATE ON RUMORED 'YELLOWSTONE' SPIN-OFF SERIES, YEARS AFTER REPORTS FIRST SURFACED

Tim McGraw said the grueling filming schedule for Taylor Sheridan's "1883" pushed him to his limits, with 14-hour days and six-day workweeks taking a brutal toll.…