You can call them. They keep a limited selection of brands in stock. Their website will probably say which brands. Then call your nearest store with the size you need .
You can also try the manufacturer's site and they will tell you who sells for them.
You can go to their website and search for the tires you're looking for. If they don't have them in stock, they can ship them to your local Walmart.
They have tire section. I would call first.
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