Just to say I have the same problem 2 buckled wheels on Ford Fiesta 1.6 s done 13k,been driving 30 years and have never had a buckled wheel.
While I do not doubt that pot holes are the cause in my opinion the wheels are clearly not up to the job,its a fact that in most towns in the uk you are gonna hit pot holes at some point.
going to see the tomorrow will report back.
Just an update after reading the rest of the posts on here decided that taking it up with the Ford Dealer would probably achieve little except raising my stress levels.
So took it to a friend who runs a performance car garage and he said the buckling was not that bad and they could bang out some of the dents on the affected wheels and recommended swopping the back with the front which they have done and everything seems ok for now.