Just purchased a 2008 Q7 with he S-line and 21" wheels. Researched tires and finding not much out there. Prefer all-seasons, as we live in NC, but will travel to mountains and to the north. However, we will not really have sig winter driving. No need for performance tires, as not what I got the Q7 for. Can we put 295/40/21 on there and go with the Perelli all-seasons? Cost of the tires sucks, but since do not have to buy them that often, it is not a huge deal, just a shock. Thanks!