Winter tyres

Hello everyone. Would you like to know what it looks like with the winter tires – with me in the appearance there are such in it: 155R13 78Q M+S. These are winter tires because of the M+S or? I have found now which ones are like this: 155/80 R 13 T Roadstone on 5×13 ET45 steel rims Do you have to have the extra insert? If yes the rims also have to have any expert reports or so and can you enter them without any problems? If I find tires that correspond to the data as they stand in the appearance I can have them h so use no matter from which company they are or? THX Acid22