Winter alloys what size do you run ?

[sid10]

Bought a F15 last week 40d M sport , also bought some style 491 alloys , tyres for these are hard to come by in winter format , wondering if 19" 467M none staggered would fit as I can buy a set for 1/4 what the 20" are ?

[X5Sport]

My E71 has a staggered 19” set, however the ‘*’ marked rear size has gone out of production across all manufacturers.

I will probably end up with AO/MO or MOE marked tyres as the Dealer told me these are becoming standard in BMW models. I am waiting for confirmation from BMW as to which of them is approved, or what the alternatives are that will not void my BMW warranty.