Tire sizes and gas milage

[heinz wittenbecher]

I had the same concern when I make the switch so the tire shop was kind
enough to research. It turned out the the actual difference was zilch or so
close that it wasn't enough to recalibrate my speedometer (digital), even
though it would've been real easy to do.

The rim is smaller, but the tire is taller = same distance on the road.

Heinz
Vancouver, BC



>
>In my thinking, with a smaller tire and smaller circumference, the distance
>between Houston and LA just got longer, and the milage better !
>
>Anneke
>Houston
>
>

 

[henderson]

Hi folks!
Maybe someone can settle a "discussion" for me....

If one puts a different size tire on the GMC coach (ie going to 16"), won't
that impact gas milage calculations, given that the speedometer is calibrated
on 16.5 ? Or is the tire circumference not related to a change in rim size?

In my thinking, with a smaller tire and smaller circumference, the distance
between Houston and LA just got longer, and the milage better !

Anneke
Houston