I have 195/14R tires, which are slightly larger than stock. I checked an on-line computer for odometer error and got a trivial difference. Therefore, I use the trip odometer and gallons added at fill up to calculate gas mileage. Stock tires differ for vanagons -- and I assume that for factory (or dealer) installed 205 tires, the correction would have been made in the odometer by VW. Dave Mc
On Wed, Oct 21, 2009 at 10:48 AM, Loren Busch wrote: > RE: Calculating gas mileage > A question for all those reporting gas mileage. How are you > calculating > your numbers? Are you using the odometer/speedometer on the dash? or > are you > using the trip meter on a GPS? If using the odometer, have you > calculated > the error in your speedo and odo and figured that in? Are you running > stock > wheels and tires and if not have you figured the error induced with > non > stock tires? > I ask because two discussions that get going on the list seem to > ignore each > other: speedometer error from different tires and gas mileage. No one > ever > says that the mileage being reported is corrected for tire size/speedo > errors. |
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