Assuming they're the tires I think they are and they don't have a lot of miles I'd contact the US distributor / importer (Veltec) and ask for warranty replacements. I've had a couple tires over the past 10 years that went out of round for no apparent reason. I contacted their US rep via Email to report my problems and they were really good about sending out replacements. I've also had no problems returning a defective tire via my LBS for a warranty replacement tire.
To your original potential prognosis, you would have noticed a pot hole that was bad enough to damage both tires and I'd recommend keeping the tire pressure in the 135psi - 145psi range if you end up with replacements.
Last edited by TandemGeek; 06-27-07 at 07:05 PM.