Well Congratulations on the booking Sir. Regarding tyre size in City, I'ld like to pitch in my share. The 185/65/R15 would be the best size for your city.
--Both Steel and Alloy Rims offered by Honda for regular/Aspire variants are 15x 5J (15" Dia, 5" Width). The 5" width Rim is maximum compatible with 185s. 195's are compatible with 5.5" onwards to 7" wide rims. Your sidewall would be excessively convex resulting in poor high speed stabilty.
--With 195s, the tire dia increases by more than 4% and referring to the below link, it is only recommended to increase tire dia upto 3% max. Otherwise you'll have handling and braking issues. And to mention false speedometer as well.
Now above all is theory. Below is experience that I am personally letting my 195's go and have downgraded to 185's. I was facing a hard steering, self centering issue, more drag because of the Auto variant.
Tyres for Sale
I hope this clears the tyre concern to some extent