Pitching machine tires

I don't normally talk about tires for anything but vehicals that people ride, but as a guy that works in a tire shop, I get asked a lot of strange questions. Here's one I just got:

What are the best replacement tires for pitching machines, and where can I buy them?

Well, I don't have enough experience to be a judge of what's best, some quick research in google pulls up "Pitch Master Tires" from Cheng Shin, but they aren't cheap! The site I saw that was selling them online, had them for $200 US for a pair of new tires.

Author Notes:

David Parker contributes and publishes news editorial to http://www.buying-tires.com.