Do you sell used tires

Only a few, from time to time. Generally, they sell mostly new tires.

Discount tire does sell used tires but generally it is a very limited stock as they are selling the tires they get from customers who replace them with new ones.

Yes

I don't they do thou.

They do, but you'd likely find more searching Craigslist. They have companies that advertise used tires with wide range of sizes, etc

Yes, a few here and there

Some, but primarily new tires.