Dealer says no go can't get the 214's on a new 50.

Question: When you add the 20 inch option to a 50 or a 35 does the factory install larger flares? Comparing a build with 19s looks a little different than a build with 20's . The build with the 20's seems to have bigger flares.

Can anyone confirm this?

I am thinking about order a 50 with 19's and then buying (214) 20's for a sweet summer set up. Will I need to buy flares as well?

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2012 X5 50i & 2003 X5 4.6