I've found that before with new tyres on other cars, and it usually settles fairly quickly. It might be worth a try running them at slightly lower PSI.
One thing I've noticed with the Vreds I had a few years ago (on a Lexus IS200) is that they needed very high psi, their web site gives you recommended settings for each car. I think I had something like 42psi (Lexus recommended was 32psi). These were the Ultracs, which were replaced by Sessantas.