For the price of 4 Defender tires I felt that I'd gotten a brand new (sportier, tighter) Car! Every element of the "Feel" of the Car felt extremely tighter, quieter, smoother. Haven't had miles to check for any fuel economy improvement yet but it won't matter with so much of a drive improvement I feel that I'm driving a much safer car now. Knowing it will stop where I want it to and handle as I want it to. Just the best improvement you could make to your car.