Opel Vivaro Steel rims not registered

Hello, I recently bought a second-hand Opel Vivaro from a dealer. Now I have noticed that the steel rims are tyred with 215/65R16C (which are currently mounted on the car), but these are not registered in the vehicle license. There is 215/60R17C which was also added with summer tires. Does anyone have any idea if this is right? Greeting Michael