T.F.
We have done business for several years with Discount Tire located in Plano at 75/Spring Creek.
I can say that this location has always been very fair, warranties are good, service is good and little to no wait time (at least they tell you if you are in for a wait).
We had several cars go through the tire process there, however, 2 weeks ago when my husband was out of town, my high end Mercedes had a couple of tire issues.
My dealer quoted me on tires and recommend that I double check with Discount. I did and Discount got me a better tire and better warranty. Granted, my tires, as well as some other models, cannot be rotated there therefore with 2 tire sizes, the 45,000 mile warranty is voided. I do however have an extra warranty I purchased for $135 that covers all 4 tires I bought. I think I spent about 1300 for 4 new tires for my car. GRANTED....mine are not the regularly used tires, most of the time special ordered so don't expect that high price with any car..
We have replaced tires on other cars we've had for much less. The shop where we go is very nice. They check tire pressure if needed, do what is needed most often at no charge.
I have a husband on the road a LOT and I need someone I can trust and I do trust Discount Tire at 75/Spring Creek Plano.
Good luck