So I had a impulse buy and bought some 18x8.5 mustang wheels for my Ranchero. I have disk brakes on the front and the inside of the rim is pushed up against what I think is the top of the upper control arm. I dont know what this part is called but it looks like a small half bubble on top with bolts on each side. it looks as if its a protective covering. Anyways I ground it down a bunch. Almost all the way through actually. I am wondering if I weakened anything. Here is a picture. I darkened the rest of the picture and inside the circle is the section I ground down... what s this called?