Ya none of the modern 200 treadwear tires we use for Autocross come in anything wider than a 225 for a 16 inch, or 255 for a 17. Meanwhile I can get 285 for an 18 and 305 for a 19. I would love to get the lightest 18/19 inch wheels possible, but sometimes cost is an issue. I believe tire size is one of my main advantages over the Mustang guys...