Well good news first, P3189 Black/Textile/Tech/Air Suspension/Premium Sound/21 " Got the email about early delivery, wanted to go ahead.. However, I called 1st to request a change. I have had second thoughts about getting 21 " (more expensive, shorter tire life, rims more prone to damage from curbing, etc), and asked if I can switch to 19" After multiple phone calls and emails, got "no changes allowed once finalized". They told me that once the tires are put on, they can't be taken off (considered used) I realize that it is partially my fault for not making this decision earlier, but after seeing more posted pics with the 19", I liked the look. Compared with other potential requests, I would think this would be an easy swap out. Furthermore, I did see that someone else was able to change color, which I would think would be more difficult. Maybe I am being unreasonable because rules are rules, but given the fact that I am an early adopter , giving $5K 1.5 yrs ago, I thought I might catch a break. I am sure that this will wear off very quickly after I get the car.