Slight clarification bro, from what I understood told to me by mechanic: if you drive it constantly above 150 for a stretch of 50 kilometres or so, that starts heating up the bearings which go bad and give away. Or the other scenario is if car is driven in deep water resulting water to penetrate into them, which causes bearings to deposit impurities of dirty road water and also water reaction ultimately making them dry producing more friction.
So depends if kharcha is really coming your way or not. Original set of all 4 i.e. Front+Rear bearings is around 30k (I hope i am correct and have not forgotten the prices)