For quite a while I have got all my tires from Discount Tire. There is one close and they always give me good service. They even mount slicks for me.

I am kind of a Michelin bigot so that is mostly what I have bought from them.

In the past I have always bought the certificates but recently when I got tires for my 2007 Magnum R/T I passed.

About the only thing I gained was the road hazard insurance and the cost was close to the price of a new tire. I don't drive the car that much so I passed.