My experience is that upgrading the tire size, somehow will effect the suspension on long terms. (Within one year you will feel it).
It's correct that Alto looks pretty nice in such big tires but also I didn't found any issues with stock tires. No stability problem at all. Tires do its job very well. Yes, there are little rolling noise but it's ignore able.
Stay with STOCK SIZE and correct tire pressure.
General tires are tough, I used them in four different make and model cars. Till 45 to 50 k mileage, they never got puncher.
Good luck with your new ride.