I don't need new snow tires this season (the Blizzaks still have plenty of tread left) but I'm the kind of guy who will check what's available anyway.

MaLColM (my 2011 E91 xDrive) has 225/45R17 tires, which is the official spec and what every online tire configurator suggests. Except for Nokian, which not only recommends 225/50R17 but claims that is the factory default.

So I looked around and found TireSize.com where there's not only a tire size calculator but a tire size comparison calculator. According to that, a 225/50RT17 tire's diameter is 25.9" verses 25" even for a 225/45R17. Will that +3.6% keep them from fitting under my stock wheelwells on my stock suspension?

Oh, and I know both front and rear diameters MUST be the same...