Originally Posted by filip00

I am really curious as to what is actually causing this, if that is really true. I'll tell you why I'm very suspicious about it.

First off, new cars have a higher tyre pressure and they sit around for quite a while before being delivered, and those tyres don't have flat spots.
Secondly, I cycle a lot. New bicycle tyres often come folded, like, completely folded. You unfold them and mount them to the rim, pump them up and presto - they're completely round and no flat spots, although they were completely folded.
I don't think it's that easy to create a flat spot, let alone if you raise the tyre pressure.