[del82]

Run flats are notoriously bad for wear.

I'm on 4500 miles on my M340i with factory Bridgestone runcraps. Had my car in for some warranty work in July and they did a health check - rears came up with a warning that they are down to 3mm. Fronts at 5.5mm.

I'm religious with tyre pressures.

It's a good excuse to get rid and put on Michelin Pilot Super Sport 4s is how I see a positive.