Everyone has a story about Discount Tire. Heres mine.
With five trailers on the road I was using Discount tires ST radials they insisted I use on all my trailers with 15" and 16" sizes. After the first 6-8 months of operation tire failures and down time on the side of the road had put my small company in the black. I was using so many ST tire under warranty Discount told me to get lost and they weren't replacing any more tires under warranty because I was a commercial operator. Hell they knew that when they set me up with their tires.
Dropped by my area Goodyear truck tire dealer for a new set of tires for one of the DRW trucks and was talking trailer tires with the service mgr.
He had sidewall cutaway sections of Goodyear tires. He showed me a Marathon cutaway vs a same capacity Wrangler HT. Nite and day difference. He made me a great deal on swapping my small fleet (all 5 trailers) to the Wranglers and another brand of LT he carried. That move cut my tire issue by 80 percent. That was some 30 years ago.
IMO a good place to buy lawn mower tires.