If I were to put on some 18 x 7.5 with a 48mm offest, will it look funny on the tC? Will I need to get wheel spacers. IF so, what size? Thanx

 

That shouldn't be a problem. Stock offset, according to the FAQ is +45, and the stock wheel width is 7.0. I say you try it, then put spacers on later if you think it needs it. Post some pictures after you get the wheels on, eh?