I'm a non-URM with a 4.0 and a 172. PT average about the same with a few (recent) scores between 174 and 177. Is it worth taking again in November? My top choices are Michigan and Northwestern.
@profile427 there are more factors that will go into this than just your LSAT score. For example if you are a URM then your GPA would give you a shot at most of the T14 even with a 160. But of course, higher is always better!
Admission with those numbers is not unheard of, but very unlikely especially for a non-URM candidate. Odds are you won't get into any T14 with those numbers, though T20 is a reasonable bet. If you're okay with that, fine. If not, retake.
Wish I could point you towards more specifics but I know I've read that you can equate URM status towards at least a few LSAT points. Make sure you write a good diversity statement!