I had a blow out on one of my rear tire. I had a Michelin PS2 295/25/20 some how inner side of the tire was completely torn. It had over 50% tread left.
If anyone has a used tire for sale I like to buy one.

Ebay is your friend. You also may want to check out used tire shops in your area.

Used tires. On a car that has 500hp, and cost well over 100k new. And can run 150 mph (or more). Wow.

I ran used tires on my 540i for years. I never had any problems. If you can score a used tire with 60% or more tread remaining for cheap...why not?

On a related note- check and see if that tire was worn out on the inside to begin with. A broken abc on that side (leaking shock or valve block) will result in too much camber and worn out tire.

It was torn on the inner sidewall. I had the wheels refinished by HRE and the tires were mounted back on. I put the wheels on the car less than a month ago. when I put the wheels on the car all 4 tires looked fine they were all even,
all other 3 tires are over 50% tread left so I just want to try to buy one to use it till others are worn. If I can not find the one tire than I will buy 2 new rear tires. I just hate to throw away perfectly good tire with over 50 % tread left.