I've been talking with a sales rep from HRE wheels about having a set of wheels made for my A5. I told him that I wanted to go with a 10" wide wheel (among other things) and he told me that he was going to give all the specs to an engineer to go over and he would get back to me. I just got a message on my cell phone from Matt the sales rep telling me that they recomend I go with a 9.5" wheel rather than a 10". I have seen plenty of A5/S5's with 10'' wide wheels. Any suggestions why they want me to go with the smaller width, and they also recomend a 265/30/20 tire?