At 82k was the mileage I traded my mk6 Golf R, I had stg 1+ since 6k miles.
At 68k I noticed minor slip on my clutch, at full/heavy throttle.
At 75k noticed my stock suspension slightly softening up, by 80k it wasn't to my standards, meaning I felt very minor floaty-ness. I didnt feel like investing in my car, so I traded it in.
I definitely wouldn't recommend trading a car in for those reason. It was more of a personal preference.