Repairing never works. Only dil ki tasali and money waste.
BTW your post is very confusing, You recently bought a used car with 15,000 km on it or your purchased a new tire which got busted and now you can find a similar pattern?
One thing i dont under stand about Japanese used cars it that the tires dont justify the meters mileage, almost all car tires have very less thread.
better replace tires 2 at a time
Also, if budget is an issue, General tires work really fine. instead of Chinese brands go for brand new Pakistani tires, youll be happier