(EXCLUSIVE, Premium Rates Apply) NASHVILLE, TN - APRIL 14: Musician Tim McGraw, singer Taylor Swift and singer Faith Hill seen backstage during the 2008 CMT Awards at Curb Event Center at Belmont University on April 14, 2008 in Nashville, Tennessee.
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Tim McGraw Knew Taylor Swift Was Destined for Greatness When They Toured Together in 2007

Tim McGraw saw a star in Taylor Swift.

After Taylor Swift first made a name for herself in country music with the song "Tim McGraw," the introductory hit's namesake and Faith Hill added Swift as an opener for select 2007 dates on the couple's Soul2Soul II Tour.

As McGraw told Audacy's Superstar Power Hour host Katie Neal, he was certain then that the sky was the limit for Swift.

"Taylor was one of our opening acts. It was just her acoustic guitar," he said. "We spent a lot of time talking to her in the dressing room and stuff before and after the shows. Faith and I both said, 'This girl, she's going to be the biggest star in the world.' She's just so curious, which is a sign of great intelligence. We had no doubt she was headed to do big things."

Fittingly, it was Swift's The Red Tour in 2014 that surpassed McGraw and Hill's second Soul2Soul world tour as the highest-grossing country tour of all time.

A published author already, McGraw also discussed whether or not he's ready to write a memoir.

"It's something that's not on my radar," he said. "'Cause if you're going to do it, I think you've got to go completely all in. I think there's a lot of stuff that I wouldn't want to tell. I think if I did a memoir, it wouldn't be full and complete."

However, McGraw jokingly left the door open to someday pen his life story.

"Maybe down the road we'll see... When all the principals are dead, so I'm not getting any trouble. Protect the innocent and the guilty," he added.

Besides, McGraw thinks he's got more chapters to live.

"I feel like I got a lot more in me," he shared. " You know, I still feel like I'm still cranking, getting better— hopefully I'm getting better. I try to get better."

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