Car hops after wheel change

Hello together, I’ve had to get new summer bikes last week. my choice is on AUCEC DELANO, with 255/50 19 pirelli pzero rosso my autoheinie ordered and mounted the bikes then, we drive very nomally home the next morning the good can only be hard to hold. the car “hoppst” (it feels like it comes from the HA) and the steering wheel hits clearly to the left and right. my autoheinie (with which I am really satisfied!) thinks, there still have to distan zringen in… can that be or has something gone wrong when mounting? many thanks for a tip… XC90 BJ 2010 D5, 185PS