Platinum rims: Strong infiltration after winter storage

Hello everybody, I’m close to the tears :'( Since Easter is at the door, I pulled my aluminium rims (Platin P53) on it today and was greeted by strong clear lacquer underwalks. I hung two pictures with you showing the true extent of the destruction. The rims were stored for the first time this winter in our dry cellar and thoroughly covered. The two rear rims look equally bad. The front ones, on the other hand, show almost no signs and d look as neat as I stored you in October. Other rims which were also in the basement show no signs. Even if I don’t drive the car often, but I don’t want to present it to my environment. I ask myself how this is possible, and what can I do now? Putting the rims into the treatment is certainly really expensive with these rims (high gloss facets). Do you have any other ideas what I could do? Many greetings and beautiful Easter.