Firestone Champion Fuel Fighter All Season 235/45R17 97H XL Passenger Tire

I purchased the Firehawk AS initially thinking I could save on the tires but still get the mpg's I was with the original tires that came with the vehicle. Well I was wrong and immediately noticed a difference in my vehicles ability to coast and didnt go on battery as often or at the same speeds after purchase. So without changing driving habits I lost about 5 to 7 mpg.... I then took advantage of the buy and try 30 day guarantee and upgraded to the Champ Fuel Fighters and would do it again! These are now my tires of choise and wish I had done this for my wifes vehicle. I am now back to 42 - 45 mpg rather than 35 - 37 and notice my vehicle coasting better and going on battery more often immediately. Without changing driving habits the tires made a noticeable difference within the first 24 hours of upgrade.