I remember taking an 8-Track player and it's tape cassette apart; it was a miracle that they even worked at all, with the way the tape looped back into the center.
The Wow and flutter was just something we got used to, I guess.
I had a Realistic 8-Track recorder and made tapes for my quad 8-Track player in the car.
I still have both out in my garage.....and I don't know why.