Just a reminder, if you decide to take them off for the Winter and put on regular wheels and tires (non 22") and you have Sync and Navigation, you will need to have the dealership set the tire size in the GPS config. I didn't realize that until they had to replace my Nav head unit and they asked me if I had non-stock tires when he was configuring the navi system. It also may be for the gas mileage calculation computer.
Anyway, I just decided I am not running mine in the snow and picked up an old Subaru Legacy for the PA winter season. That'll stretch out my warranty and let my kid have a car when she hits 16 in a year.