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Better in the winter........ Posted by Herb Hirsch [Email] (#114) [Profile/Gallery] (more from Herb Hirsch) on Wed, 23 Jan 2008 11:51:47 In Reply to: Fuel Mileage???, bever77, Tue, 22 Jan 2008 18:35:08 Members do not see ads below this line. - Help Keep This Site Online - Signup |
TIRES:
Summer: 225X45X17
Winter: 215X55X16
Used on all 4 wheels and rotated every 3K-5K miles
SPEEDOMETER CALIBRATION: Checked..1%-2% error on both sets of tires
GAS MILEAGE:
SUMMER: 19-20 mpg local
27-31 mpg highway
WINTER: 21-22 mpg local
29-32 mpg highway
In both cases mileage is the appropriate tires are mounted.
On my previous Saab, a 2000 9-5, gas mileage was generally better, but the summer/winter difference was the same. Variables that might account for the better mileage on the 2000 9-5 include manual versus automatic transmission, 200K+ break-in miles versus 8K break-in miles, and a very high preponderance of Interstate miles (50K miles/year of which 45K miles were Interstate).
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