It is always recommended to go with the manufacturer recommended tyres for your vehicle because:
The tyres are tested thoroughly on your vehicle for every road condition.
This guarantees optimum performance.
It also ensures that you get great fuel efficiency.
WHY BUY BROADER TYRES?
Upsizing is basically increasing your rim size, over and above what your car manufacturer provides. When you fit broader tyres on your car, it enhances the personality and overall looks of your car. It may also improve braking.