Sorry to hear that - here is the form from City of Boston.
http://www.cityofboston.gov/citycler...claim_form.pdf
There are probably many rules and loopholes about how long the pot hole has been there, depth of the pot hole etc. etc. before they actually pay out......buts it worth a shot nonetheless.
IMHO low profile tires and Boston roads are completely imcompatible. We traded in the 19's that came with our M3 for 18's shortly after buying it. I don't even put the summer 19's back on the X until after end of April when the worst of the craters have been filled.
good luck