Recommended rim tire for 306

Hello friends.
2000 mod. I own 306 platinum, my car has 14 inch steel rims and 185 65 14 tires. I want to change my wheels. If I increase the rim size to 15, would it be a problem with the vehicle.
Can I also use the original 6-spoke steel wheels used in mondeos.
thanks in advance.

It won't be a problem if you switch to 15 rims. As the size of the lasitk changes, the tire prices also change, plus the number of studs of the mondeos is different, but maybe you can find similar peugeot.