Hi, I'm new to this forum. I'm the original owner of a 2016 smart passion coupe and am waiting for the two year standard service to be completed. My car has 27000 miles on it and the original tires. I'm being told the tire tread is gone and I need to replace all four tires. What's the normal life in miles for a smart driven around the suburbs? Lots of stop and go and turns. Thanks for your help.