Tire size for S4 Spider

[DavidH]

Hi, everyone. I am the newest newbie here -- so new that I haven't even taken delivery of the Spider I am buying; it's coming in 3 weeks. It's a red '91 S4 that is possibly the most beautiful inanimate thing I have ever seen in person. But, there is plenty of time to gush later. For now, I have a question. This Spider is not the Veloce model and so came with 14" steel wheels and plastic wheel covers that look like phonedial wheels. (The Veloce had 15" alloy wheels). Now, I recently bought some nice 14" Cromodora Daytonas which will replace the steel wheels. So here is the question: What is the best size tire to put on these Cromodoras? Thanks much. David