Rotor will not sit correctly on the hub.

[gstspyder1998]

I changed my front brake pads 2 weeks ago. Everything went smoothly except for one problem. I noticed when I was removing the front right rotor (to have it resurfaced), it was loose from the hub. When I pulled it out, it just slipped out. With the front left rotor, I actually had to hammer it a little to loosen it up. Now that wasn't the problem, the problem is that when I put the rotor back in, it's just loose like it was before I removed it. It's causing the brakes to squeak really loud when I brake. I'm pretty sure it's caused by the rotor not sitting in properly, so when I brake, it probably moves around. Should I just buy a new rotor and replace it, or is there a way to make it stay in place and not move around? It's really irritating me and I'm not sure what to do with it other than buy a new set of rotors.

 

[SlowSpyder]

I say the squeeking is from your pads. Your rotor shouldnt move since is held in place by your wheel and 5 lug nuts

 

[gstspyder1998]

I say the squeeking is from your pads. Your rotor shouldnt move since is held in place by your wheel and 5 lug nuts

That's what I would have thought also, but the pads are brand new. They are EBC Green pads. Also the left side works fine, actually it never squeaked after I installed it. Any other ideas? It's really irritating and I don't want to spend money on new rotors if I don't need it since the ones I have are still good.

 

[RWKustoms]

That's what I would have thought also, but the pads are brand new. They are EBC Green pads. Also the left side works fine, actually it never squeaked after I installed it. Any other ideas? It's really irritating and I don't want to spend money on new rotors if I don't need it since the ones I have are still good.

If your rotors are not warped or have grooves in them then dont replace them. The rotor will not be loose at all if you have your wheels properly tightened on with the lug nuts. As for the squealing I would suggest you use the anti-squeal compound that they sell at auto parts stores everywhere. I purchased front brake pads along with 2 new studs yesterday and while at the cashier I saw the anti-squeal compound for like $.99 so I just bought it. Just apply it to the back of the brake pads and install the anti-squeal shims that comes with the brake pads. I changed my front brakes and 2 studs yesterday and everything is perfect now. Hope this helps.

 

[gstspyder1998]

I'll go ahead and try that tomorrow since I have it available. I thought the ones that came with the EBC brakes would be fine, I guess not. As usual, you guys have been helpful.

 

[spyder97gs]

FWIW, my rotors will not sit flush against my hubs until I put the wheel on and tighten the lugs down.

 

[blackGSX2g]

Is there any play in your wheel bearing?

Reason I ask is that when my front wheel bearing went out, my drivers side brake was squeaking as well (brand new). It turns out the bearing had seperated and was constantly rubbing through the pad and caliper bracket as it was the only thing holding the wheel on.

Jack up your car with the tire on and try to wiggle it side to side/up and down to see if its loose at all.

 

[wret]

All good advice. It's not uncommon for a new rotor to be loose when you take the wheel off. It takes a little time for the rust to stick it back on there.

If you installed everything properly, the squeal probably doesn't effect performance. It's just an annoyance. If it really bugs you and doesn't go away in few days as your pads and rotor surfaces mate to each other, here are some things you can try.

• As mentioned above, apply anti-squeal compound to the backs of the pads and both sides of shims. Some types need to cure before use. Be sure to allow it to cure before racing off to try it.
• Did you clean and grease your slide pins? Be sure to use the proper high-temp. grease.
• Wash and sand your rotors. Use detergent like dish soap and water. Sand with 120-150 grit paper, while spinning. Wash after sanding to remove grit.

 

[ACM]

I have had 3 sets of rotors that did not seat correctly, 2 sets on my 95, 1 set on my 98. All 3 sets were aftermarket, I've never experienced this with OEM rotors, and I've had 20 or 30 sets of those I'd guess by now.

The problem as far as I could tell was that the aftermarket rotors are trying to use the hub OD to centre/locate them, whereas the OEM rotors use the rotor ID for this task, on the ridge inboard of the PCD. In the case of the 98's AEM large rotor kit, I turned half a millimetre off the inside, removing the ridge, after which the rotors seated correctly. For the 98 I just bought OEM rotors. The 95 rotors I had problems with were Brembo from TireRack and some

Mitsu probably does not hold close tolerances on the hub face OD because they don't use it for anything...

Charles

 

[gstspyder1998]

Well guys, I was planning on checking it out this weekend but the squeaking disappeared. I guess I just needed to break the new pads in. Again thanks for all the help guys.

 

[jltcat]

EBC brakes have been known to squeak when new. it usually takes several hundered miles of soft braking before the pads will break in so dont do any high performance stops until they have been broken in.

 

[Mike1992]

EBC brakes have been known to squeak when new. it usually takes several hundered miles of soft braking before the pads will break in so dont do any high performance stops until they have been broken in.

I'll agree, I had EBC pads on my old NT and they squeaked for a long time.