Hey everyone I dont have many posts here yet just got my car a month ago and started with the basics. (Chip/Intake/Dv)

AnywayI was looking at some Flik Wasps, with Toyo Proxes. Is this a good combination?, I love the rims just wanted to check with everyone to see if that was a good choice in tires.

But my real question is, 17s or 18s? I have a 1998 audi a4 1.8t qt. PA has the worst roads Ive ever been on and I am driving around to different states alot. Im just unsure of what size to get. Ive searched around but everyone seems to pick 18s? Any input, or even a link to a forum discussing this that I might have missed will be a great help.

Thanks alot to anyone who gives me a hand.