If your grinding, you're into the rotor. The rotor is the what the tire bolts to. If you look through the tire rims, you will see a silver/chromish rotor. The brake pads straddle this rotor by means of a caliper. Pull the tire off, inspect the rotor. If its grooved, it will need replacing as will the brake pads.
The tire doesn't bolt to rotor.....it has slots for the lug nuts to go through though.
But anyway. The rotors are the disks that the pads float on. They are also known as discs. When you brake, the the pads clamp down on the rotors. As the pads wear, so do the rotors. When the pads are gone, your caliper (thing that holds the pads) do the braking for you. They aren't supposed to, and it is very dangerous to drive like that. Any shop you take it to cannot legally let you drive away until they are fixed. You may be able to resurface the rotor. Otherwise, you will need new ones.
__________________ <span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
its definetely your brakes and rotor. My car was grinding like crazy and on top of that one of my wheel barings was shot. So you can imagine how crappy my ride felt and sounded. My back rotors were shot so, I purchased some brembo cross drilled rotors for all 4, got new brakes, fixed my damaged wheel baring, got new mobil syn oil installed, and new oem spark plugs.
UNFUCKING BELIEVABLE!!! My car runs like its brand new. I've forgotten how quiet my car was!
I was trying to explain to Rich328 in a simplified manner. He doesn't know the what rotors and pads are or what they do. and now you want to throw a "hub" into the conversation? Of course the tires attach to the hub. I was just trying to explain where the rotors are.
Aaaaanyways... Since nobody really clearly said this before, it's very bad to be braking without brake pads and the calipers are braking for you. Not only does it destroy and mess up the calipers, the rotors take a beating too and get seriously grooved, and if the padds are not changed soon enough, will ruin the rotors. Go to a tire shop or mechanic place, just about *any* gargae can do this job, get them to replace your pads and inspect your rotors (it's just a visual look-see) if they need changing.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.