Ma shaa Allaah, looks elegant in silver, doesn't it? Nevertheless, Usman bhai, if your father is going to drive the car on highways, then do get the tyres replaced. There are many people here, who have done that, because talking about my personal experience, my Wagon R VXL is on stock tyres, and has been wobbling on windy roads, since day one. Other members may have different experience, but it is better to be safe than sorry.