Its on the front.
jwight so should Mercedes know how to do this? The only place that officially works on smarts is one Mercedes place and im already having to bring it back for a 2nd leaking rear axle seal 1st replaced in June 2017. The shop who said they can work on Smarts totally failed then.
If it's on the front, you can take it to a good alignment shop and have them set to the toe. The factory specification is for a large amount of toe-in, which makes the car more stable and understeer more (it already understeers a lot), but this also creates a lot of tire wear. I'd suggest setting the toe-in to 1/16" on each front tire. As the car rolls, dynamic toe will approach zero, which will minimize wear. That smaller toe setting also settles the car down at freeway speeds - it hunts around less and is affected less by grooves in the road.
The driver side wears more probably because you have only the driver in the car the majority of the time. That puts more weight on the driver's side front tire, wearing it faster.
