Just put on some 15mm spacers in the rear and now i'm getting a grinding noise when i slowly turn or take off. In order to re mount the rear brakes I had to add some washers and extended bolts to compensate for the spacers. Does any one know what might be causing this noise? I had used about 7 1/2inch washers to match the 15mm difference, anyone have any recommendations on a better way to do this?

Thanks

 

Are you saying you put the spacers BEHIND the rotors, and attempted to move the calipers outward using washers as spacers?

And these are 15mm (0.60") thick "spacers", using longer studs, and not "adapters" that bolt to your stock studs and have a new set of studs to mount the wheel?

 

Still like to find out how you installed the spacers.