The Escort Cossie rims are 16".

As louturbo says the Mondeo rims look the same. They also have a better offset. The 5 spoke rims come in different offsets though (as I found out teh other day ) ET35 and ET40. iirc the ET35 was the better for clearance around the plastic filler pipe.

For tyres stick with a 195/45/16 for clearance and don't slam it as it looks crap and will handle worse than a base model Corsa

HTH