What kind of driving do you do (in respect to city/highway percentage)? Yeah, snow tires usually kill a few MPG, especially when I put my Altimax Arctics on my Cavalier and my brother's Buick - though they made up for it in bad-assery in snow. Our Cruze diesel has Michelin Xi3s, which are also great in the snow - but are also LRR tires, so they lessen the hit to fuel economy quite a lot.I get 28-31 depending on the weather and my driving with my 07 LT 4 door 5spd. Also I am running snow tires at the moment. Hope to increase my fuel milage with better tires.