You need to be more specific on which Speed Star Wheels you are talking about... they have had many different designs over the years.
I don't think 19x9s will suffice at all. As already mentioned, 9.0-wide is 0.5-inch narrower than an OEM TT wheel. Why anyone would go narrower is beyond me. And if you had to go narrow, at least go with a smaller diameter IMO... get light wheels if you have to get narrow wheels.