I've just replaced the original 15" steel wheels on my mkV Golf with 17" monza's although when I was getting the new rubber fitted the guy at the tyre centre recommended that I should get some new wheel bolts I shouldn't be using the original steel wheel bolts with the alloys as they can wear into the wheels.

Is this true or am I okay sticking with the current bolts ? If not can anyone point me in the direction of the proper items ? Cheers