Quote:
Originally Posted by TexasCotton
Okay I somewhat understand your statement and is in line with my personal perspective and thinking. Going from 185/65R15 OEM spec to 175/65R 15 and/or 175/55R 15 may be inline with that mindset.
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If you go to the same or lower profile heights, the tire diameter will be smaller, and your engine will rev higher - that's not the way you'd want to go for fuel efficiency.
The Prius' CVT complicates matters a bit, as it'd try to lengthen the gearing to get the rpm low again.