I have an absolutely mint 2009 E91 2.0 TDI M-Sport. Currently on 62,000 miles and i've owned it since 50k. Its got a full BMW history and never had any mechanical issues (wish the same could be said of all my other BM's) and been well looked after from new (for example new discs, pads and Michelin's were fitted by the original owner at a main dealer just a few months before they sold it on)
I've taken a new job where I will now be doing 20,000 a year so it will be up to 100k on the clock in the not too distant future. Is there any pro-active maintenance I can do on the car such as water pump, fluids etc that will reduce the likely hood of any future issues or breakdowns?
Also, what are the major mechanical issues I am likely to face do you think? One that I am aware of is the timing chain by the bulkhead when the engine has to come out to fix, but I am unsure if all cars are affected or not. Are there any other major issues that I should be aware of as the mileage increases?