I just got some 16" Rota Grids with 205-45 yokohama avs es100 tires. When I drive it I can hear a slight scrubbing noise. I looked at the front wheels and the caliper is rubbing on the very inside of the wheel. It is only doing this on the front. It isnt damaging the caliper, it is just rubbing a groove in the rims. I was told by the company that I bought them from that I wouldnt need spacers. Also, I dont remember seeing spacer grooves on the back of the rims. What is going on? Does it just do this until it wears itself down? Thanks.