Moderate success can be had with even the hardest tires if you heat them so hot that you can only handle them with a pair of welding gloves on.
That means heating them up in a microwave in steps . A few minutes to start with and then in successively shorter bursts , 20-30 + seconds or so depending on the size.
Try heating your old tire first to see how long it takes to make it rubbery .
I will recommend that if 2 tires are needed that you order 3 just in case one breaks.
I still have quite a few different sizes of semi pneumatic tires if needed.
And NO I will NOT put them on for you !