Hello Kitterer,
     one that DOES work is to fill up your tires to their maximum.
     the recommend from the auto manufactures is a compromise between
     ride and mileage. if you just want mileage, harden 'em up!
-- 
Best regards,
 Bill                            mailto:pythias at pacifier.com
 '66 Sprite
      * "I had an accident in the kitchen," said Tom with panache.