i would keep it.. having had my 03 altima totaled on the 14 freeway from a tire blow out.. thought it was the wind from the extra noise i was getting.. by the time 20-30 secs of "wind" noise.. pop.. spun out clockwise from the rear passenger rim anchoring into the cement.. and seeing the eyes of death as a big truck smashed my front section.. thank G' for air bags and srs and crumple zones.. only had soreness for 3-4 days but did stretches and 100% recovered.. bought my fit same day 2/18/08..
if you do a search there's alot of fatalities from tire blowouts.. and i guess that's why 2008 and up vehicles mandatory tpms.. people who have long commute.. hit a nail.. or slash tire.. you're gonna be screwed if you haven't realized your tire is flat and traveling 70+ mph.. 14 years no accidents on my record.. and bam.. sob tire blows.. it feels like a vibration for those of you who have never experienced flat, sounds like wind too hitting the car.. but i never experienced it before.. and didn't decide to pull over in those 20-30 secs.. keep tpms.. it's worth it.. it will save lives..