Quote:
Originally Posted by johnathanf1lm
I"m sure this was mentioned but a Prius has a CVT which putting larger tires doesn't do anything besides add weight since the CVT adjust the gear ratio constantly. Now if the Prius had a fixed geared trans like most automatics this would add weight but would make the gears taller. Long story short wrong car to test and prove the larger tire theory.
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Personally, I've experienced otherwise.
A CVT can adjust the gear ratio between its limits only. If the optimum lies beyond that, tires do play a role.
Driving at a constant speed between 30 and 60 mph, my CVT is at its top range all the time; revs = mph times 30.
I bet the Prius, with its bigger engine, will also have no trouble doing that.
So tires with a larger circumference will drop RPMs in the 30-60 mph zone.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.2 Gmeter or 0.13 Mmile.
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