Quote:
Originally Posted by mpg_numbers_guy
My mom runs 50 PSI on her Prius. I ran 68 PSI in my Civic. Currently running 80 PSI in my Insight. Wouldn't recommend over 60 PSI unless you're an extremist.
From what I've read/experienced, tire wear seems to be best at sidewall max, and >70 PSI accelerates wear slightly on tires. Not all cars show a MPG improvement past 60 PSI, so unless yours does don't run them past 60 PSI.
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Wow, what tires are you running 80 psi on your Insight? My understanding is that burst pressure is about 4x sidewall max. I was running low 50's on my Gen2 Prius. Snapped a rear spring at one point. I don't know if there was a connection. Currently mellowed down to low/mid 40's on my Gen3.