Year old F80 seems faster over time

[Poiseuille]

I've always thought that was true and although I've never actually measured it on any cars I've owned I believe it to have been absolutely true for an E39 540 I had and likely true for Z3 I had around the same time. R&T used to include exactly that comparison in their long term tests, 0-60 new and 0-60 at >40K miles, results were always different. idk if R&T still does that because I no longer subscribe to R&T, instead I take a sharpie and write 'R&T' in big letters on the cover of Car & Driver....turns out there's no difference.

[BMV///M3]

Did you have the nitrous on?

[f80NJ17]

Originally Posted by Hachima

Do you use different tires for the winter vs the summer? If you live somewhere with cold winters I suspect the summer months are a nice performance boost.

Yup. I switch tires

[M3Meh]

Turbo cars Get better with the miles (to a certain point obviously). My old Audi S3 turbo started to pop more with the miles and engine really loosened up (was best around 40k miles). I assume the same will happen with my f80 (I'm on 12k)