I have spoken with original Mustang owners who had issues early on, flat tires, stolen rims/tires, bent rims, etc..Can't believe it would be any different for the Shelbys. So anything is possible.....The car being sent overseas, any of those could have happened in between AO Smith and DeBoise.....
Imagine the following phone call from a shipper:
Shipper: I've got a flat or damaged tire, send me a replacement
Tire supplier: Sure thing
Shipper: Got the tire, it does not match the others, send me a matching set or I'll have to take my business elsewhere
Tire supplier: No problem, we will take care of it ASAP as we value your business.

Just food for thought.
Bill