Two stock sizes of City 2016 Alloy wheels are:
5.5Jx15, Offset 51 mm
6Jx15, Offset 53 mm
In my humble opinion it is wise to stay close to the OEM specs. Secondly, since as you can see that this offset is positive so a negative one can never go well with ride quality and other fitment issues no matter what brand of rims you are using.