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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we know all about that, there are hard working guys on the Prius forum that track all these features of potential LRR tyres in a database and account for correct rolling diameters.
Incidentally the US fit tyre is too small by a few percent. The 195/60-15 offers better diameter options, from memory 844 revolutions per mile. There are 17" options that fit this profile, and these are the ones recommended.