Quote:
Originally Posted by CapriRacer
Actually, No! Larger tires generally give BETTER fuel economy for 2 reasons:
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https://en.wikipedia.org/wiki/Talk:R...ct_of_diameter
Larger tires almost always have wider tread widths, 29" vs 31", but there is some dispute as per the Wiki discussion page. A lot apparently depends on the characteristics of the wheel and the surface, as well as tire composition.
The discussion assumes all the tires are the same width, and that only the diameter changes. I'd really like to get back to what I originally asked, about the difference between 7.2" and 6.2" ... any guesses as to what downsizing might mean?