Bro the new size which you are interested in installing, will severely affect your fuel efficiency, and also make your ride & driving pleasure extremely hard (as 45 aspect ratio is considered tyres with low profile). No doubt, the road grip might become better.
Original Lenso rims, Vossen rims, and other similar well reputed brands offer light weight alloy rims, otherwise, the cheap Chinese and Taiwanese brands rims available in the market are extremely heavy weight, and heavily affect car's suspension, and other related aspects.