mattyfo0z wrote:dayummm shoulda got a thicker tire to fill up the wheel well a bit more, low profile tires don't look too hot when there's a huge gap between the wheel and the fender :P
The thickness of the tire sidewall is not going to fill up the wheel gap, unless you get a bigger tire diameter.
You don't want to vary the tire diameter too much, because it will throw off your speedometer and odometer.
If the sidewall is narrower, the inside diameter for the wheel will be wider. And vice-versa - thicker sidewall means a smaller inside diameter and smaller wheel. You don't want to change the outside diameter for the reason I mentioned.