We never recommend upsizing in case of two-wheelers. This is because the aerodynamics on bikes is very sensitive to even a minute change in tyre size.
While it may seem that a wider tyre would give a better road grip, it may hamper the handling and performance of the vehicle. So, it is best to stick to the stock tyre size. In case you still want to go for a wider size, please ask TVS people for a recommendation.