Folks in my neighborhood would say the real question is why you live
where it snows in the first place (Expressed as, "What's a snow
tahr?") ;^)
Your short-legged car is taking more steps per mile than it says it is,
so the answer is lower. (It says it's run a mile, but it hasn't, yet.)
OTOH, there's no guarantee that your odo is off by the same percentage
as the speedo. . .
You may want to compare your odometer to measured mile(s) and see if
that's off by 15%, too.
Lots of folks used to complain about poorer gas mileage in the winter
when I lived in NY. I just figured that was the cost of letting the car
warm up while I scraped the windows and swept the snow off the roof so I
wouldn't go blind the first time I stepped on the brakes. . .
There's not much snow, here, but the high humidity makes the morning
frost a lot thicker and harder to scrape off, sometimes.
Chuck
P.S. If you use gas that's 15% cheaper, everything will come out even.
. .
---------------------------
Matt Murray wrote:
>
> I'm just not doing this right.
>
> I just put snow tires. I know they are a little small than stock. My town
> uses one of those unmanned radar speed displays to tell you how fast you are
> going. I know that the unit may not be 100%, but I'll use it as my baseline.
> Before the snow tires, I had a 10% error from the radar unit, i.e. I plug
> the car in at 30 mph, and the radar unit displays about 27 mph. The wife's
> A4 was almost exactly the same as the radar unit. After the snows, I plug in
> at 35 mph and see a display of 30. Plug in at 60 (I love to turn the display
> from yellow to red numbers :^) ), and display about 52. I'm guessing a
> 15% error now.
>
> Here's the mental block. I just filled up with gas for 13.685 with 385.7
> miles (28.1 average). But I have a 15% error, so is my mileage worse (23.9)
> or better (32.1)? My guess is better. No prizes on this answer, just the
> supreme satisfaction of being a math geek (Byron?). :^)
--
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36260 / It's not the thing you fling, but the fling, itself!
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