We are 15,000 miles into 4 new (april 2012 purchased, mounted may 2012) p225/55zr -17 pirelli p6 all-road 2007 production tires. i have had the tires inspected and balanced at regular service intervals and on this occasion (feb2013) was asked how old my tires were because they were in need of replacement and would likely result in a ticket by german police if stopped. by our mechanics estimate our tires looked three-four years old. because we live oconus we purchased our tires through tirerack.com. he recommended we try working with them to seek resolution, because our tires are not in compliance with german law and potentially unsafe. *tr