After you fix the time circuits, and put new tires on the DeLorean, I'm going back to 1885, and I'm bringing you home.

7 seconds sound clip from the Back to the Future Part III movie soundboard.

You can hear this line at 00:15:41.449 in the DVD version of the movie.

Quote context

[...]

- Well, maybe it was a mistake, Doc. Maybe that grave wasn't yours. There could've been another Emmett Brown back in 1885. I don't know. Did you have any relatives here back then?

- The Browns didn't come to Hill Valley until 1908. And then they were the von Brauns. My father changed our name during the First World War.

- Doc, look.

- Great Scott, it's me!

- Then it is true, all of it. It is me who goes back there and gets shot.

- It's not gonna happen, Doc.

- After you fix the time circuits, and put new tires on the DeLorean, I'm going back to 1885, and I'm bringing you home.

- The clothes fit?

- Yeah, everything except the boots, Doc. They're kind of tight.

- I don't know. Are you sure this stuff is authentic?

- Of course!

- Haven't you ever seen a Western?

- Yeah, I have, Doc. And Clint Eastwood never wore anything like this.

- Clint who?

- That's right. You haven't heard of him yet.

- Marty, you have to wear the boots. You can't wear those futuristic things back in 1885. You shouldn't even be wearing them here in 1955.

[...]