I had to have my front two tires replaced on my 2013 fiat 500 abarth in may 2015 after only 17 months of ownership (bought it new at the end of 2013) and 12,666 miles, and was told they were not covered by any warranty. these were the perelli 205/40r17xl bsw 3 season tires. the wear was so bad they would not pass inspection. i previously owned a 2012 fiat 500 sport with perelli's and had it for 17 months, but put 30,105 miles on it, and only had to replace two tires because one got a nail in it. i know rotating the tires when recommended is important. i have had my recommended services for both cars as the dealership has recommended.