Thank s mate. The refurb company said they weren't buckled. Tyres and balancing done by a different company who also seemed happy with the result. Two of the wheels have 15g the other two 45g and I have tried rotating which makes no difference to the wobble. I will get the balancing done again but I wonder if it's something worn on the car that is made worse by bigger wheels. The car is my daily and didn't intend to spend to much money on modifications as I have other projects so don't want to go to crazy looking for something if the 15s work ok, which they do. Shame though as 17's really suit the car.