How much is it to replace a cv boot at the shop and how much is it if i replace it myself? I think it is a cracked cv boot. I looked behind the rotor and it does look like there is a crack on the cv boot, but then i peeled the little rusted metal off and it didn't look cracked anymore. So i'm not sure..I made sure that i tighten the wheel and it stoped make a loud scraping noise but still makes a quiet noise of scraping.