Ford fiesta 2013 alloy wheels?

I'm looking at putting different wheels on my 2013 ford fiesta, I know about the fitment but what is the biggest wheel I can fit on my car? It comes with stock 14 inch trims and I want 16 inch alloys would they fit?

Cywgmuom

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The problem is about tire diameter. To use a larger diameter rim a shorter side wall tire is needed. Which translates into what are called + sized tires. Up to a 18" rim can be used provided the right tire is used.
But please be advised that the larger the rim, the more the rim weights and the more the rime weights the slower the car accelerates. A one pound increase in tire/wheel weight comes to four pounds for the set, that four pounds is (because it is reciprocating weight) equal to taking away four horse power from the engine (or more).

Www.Tirerack.com.