New '05 4.4 owner

[zachthefcr]

I just picked up an '05 CPO X5 4.4 with 37,000 miles from a dealer in Chicago. I drove the car back to Maryland, and really loved the car and the ride (what's not to love?). I then drove to NY the following weekend. Although rated at 16-22 mpg, highway only miles for the two trips averaged 19.6 mpg, with a light foot and careful acceleration, with my speed averaging about 75 mph. Has anyone ever actually experienced 22 mpg on the highway?

Also, the X5 has new Michelin Diamaris tires, which I understand may not do well in the snow. I spend time in snow country in the winter. Does anyone have any suggestions for managing this for occasional snow driving? The car, by the way, is Khalahari Beige with a sport package and 19 inch wheels.

Thanks for any replies to the above.