hii,

     I jst want to know about one thing about changes in tyres nd alloys rims will they effect on smoothness or mileage of the car .i have i20 elite sportz model and i was change my tyre profile and iron rims too.now i got plati alloy rims amd replace my old tyres and iron rims which are 185/70/r14 now i install apollo tyre 195/60/r15... I jst want to know that these changes will effect the performance nd mileage of my car because i face some problems like less smoothness nd less mileage after changing my tyre and alloy rims ..plsss send me your view regarding these all 

Thanks!