Tires

Original

Uninspiring to the point that I don't remember what they were except the manufacturer: Dunlop.

First replacement: Bridgestone Potenza S-03 Pole Position

Excellent performance, but with aging these have become loud as drums of hell. Best tire performance for all combinations of tires and vehicles that I've driven so far (had them on our other car as well, same observations).

Second replacement: Michelin Pilot Sport PS2

Much quieter, but very sneaky. Whereas S-03 provided scalpel-exact control, PS2 tended to give in quietly without giving much indication of the fact, and then break out of control in a chaotic manner. Didn't live as long as S-03, either, but, for practical reasons, this is what I'd probably go with for street driving - S-03 is very loud.

Third replacement: Bridgestone Potenza RE760 Sport

Crying shame in comparison to the first two. Have nobody to blame except myself - gave in to financial considerations (almost half the price of others at the time) and others' testimonials - granted, it may perform admirably on 3 Series, but is sorely deficient for a fiver.

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All sets lived about 25k miles each, will have to dig up exact numbers.