Please bare with me as I did not find the answers.
From the FAQ, I assume (?), the wheel diameter and width cannot exceed what came from the factory. My car came with 16 x 6.5 inch wheels. However, the 2005 GTI had 17 x 7.5 inch wheels offered as an option. Am I allowed to use any 17 x 7.5 wheel or am I limited to the 16 x 6.5 sized wheel?
Next, what tire sizes are recommended in either 16" or 17" to maximize traction and acceleration on the GTI's 1.8T (5spd) gearing?