Big O Tires - Fort Collins

After 25k miles on a new set of tires Big O suggested I'm ready for a new setWhat about the treadwear warranty?! "Oh, well, I suppose we could give you a discount on the new set"Seriously?! This is what I ran into when I took my wife's Explorer in for a tire rotation, balancing and wheel alignmentThey forgot to do the alignment - sheeshWe had a great start with Big O, but over the last couple years we have been disappointed on several occasionsIn fact we have bought four sets of tires in the past two years, the last set was purchased elsewhere as will be the next setIMHO Big O has turned into a Tuand Buoperation