so since taxes are coming in soon I am going to get a new set of tires. I have the 18's on my gt so a 235 tire is what I need. I am dropping my car using the ford springs so could I get an even lower look and a thinner tire by dropping the side aspect ratio? right now I have 235/55/18 what about a 45 or 50? would I be alright for doing this since I am lowering it as well?