Passat 3b Limo 99 and Tomason TN2 8×18

Hello dear passat friends for a long time I’ve been looking for rims for my passat limousine now I’ve found them, it must be the Tomason tn2 moreover I’ve found quite cheap used ones that are impeccable except for a few small scrapers that don’t disturb me or I can have them polished out by a well-known one. now my question I’ve put a normal passat bj 99 and nothing deeper or anything else have at the moment 16 inches fit because the 18 inches rims overhaup t on my passat ? I’ve never been so busy with rims and have seen on the Tomason rims are 225/40zr18 mature on it and there’s still a question come to me Suppose I need new matures can I buy 205 or 210er then too ? or fit on the rims only 225 he up ? since I don’t look so completely through would have me really happy about answers have already been googled but if there are experienced people talking about rims then I don’t look through there ;P there fly the numbers only so many thanks already