Car is a 2010 E350 CDI owned from new (so I know it's history). I noticed recently that my front N/S tyre is wearing smooth on the outer edge. The front O/S tye is also wearing smooth on the outer edge it is nowhere near as far gone. The car has done 42k and these tyres probably about 12-15k. The rest of the tyre is in excellent condition with lots of tread left. My previous set of front tyres had the exact same problem. With the exact same wear pattern even down to O/S wearing quicker. At that time I asked MB dealer to look as it was in for a service and they said all alignment was fine and they considered it normal wear on a heavy RWD car. I didn't follow it up as the tyres in general were reaching the end of their life so I stuck with then a little longer and then changed to these. Now is it worth me taking it in to get looked at or is it actually normal? I have only ever seen this sort of wear when something is out of alignment. I do corner quicker and harder than I should most of the time so I could be contributing to it (which I can accept and try to do better at ) but I estimate the main tread area of these tyres has a good 5-10k left in them so don't want this ending their life early if it can be fixed with some simple tracking. Any advice much appreciated.