[MeteorGray]

I changed out a set of worn Yokohama Avids for a new set of Bridgestone Ecopias a few months ago and was surprised that the new tires provided at least as good mileage as the worn set.

It was probably due to the Ecopias having a better rolling resistance factor, even though they had 10/32" treads to squirm around on compared with less than half that on the old Avids.

There was one other possible influencing factor: the old tires were 20560R16 and the new ones are 20565R16. So the new tires are several percentage points taller, which made it necessary to adjust my odometer readings because the odometer became measurably "off" by the added territory each tire revolution covered.

It is also possible the new taller size will yield a MPG advantage due to a lower engine RPM count per mile. I might be able to see this with time, although the difference may be too small to claim.