On fuel mileage: my OBC, not reset since I have owned it, shows over 21 mpg; I calculate 20+ mpg, occasionally over 21, on premium [w/10% ethenol in GA] since changing the plugs and oxygen sensors, on Conti DWS 18" tires. Mixed city/highway, mostly ATL commuting miles. This is up 1 mpg or so since doing the plugs/sensors. I'll see if the numbers improve when I swap back to summer performance tires in the next month or so. My best-ever tank, highway miles running at 65-75 mph, was around 24 mpg

__________________
2006 X5 3.0 6-spd w/Evo UUC ssk
sport/premium pkgs
born Valentine's Day, 2006.