ketuk very hard ke? surely paint crack, other that u r using GTI fender, sure the ketuk fender can see...reddice said:im also using 16inch..on satria..the trick is ketuk until cannot ketuk anymore..seriously..knock it hard..very hard..im using satria GTI original set.and the set is cutted.and the fender inside is being knock..hard..if that cannot solve your problem..use "batang paip"..they put it in the space between the tyres and the fender and push the fender out..unbeliveable?believe it..