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Before I tear into this. What’s the cause of one side being too close to the hub of the rotor to the point where it rubs? You can see the wear (line). It’s just the right side of the caliper which seems too close.
Last edited by DarrenX33; Jun 18, 2021 at 08:50 AM.
My first hunch is a defective pad that is out-of-whack.
My second hunch is wrong caliper.
Third hunch is the wheel bearing set is not seated properly.
It does not appear the caliper itself is rubbing, but rather the outboard pad is.
At this point, start soaking the caliper mounting bolts in PB Blaster for removal / inspection.
My first hunch is a defective pad that is out-of-whack.
My second hunch is wrong caliper.
Third hunch is the wheel bearing set is not seated properly.
It does not appear the caliper itself is rubbing, but rather the outboard pad is.
At this point, start soaking the caliper mounting bolts in PB Blaster for removal / inspection.
This is the original caliper before front end rebuild. Unless left to right makes a difference.
Also, I’ve had two different pads in there. Same result. It’s definitely the caliper touching. Hard to see in the pics. But the caliper is very close on right side where I highlighted vs the left side. You can see the gap on that side.
Not sure about wheel bearing. Seems OK when checked. But anything is possible.
Front and rear rotors have a slightly different offset (0.1 inch). Are you sure that you didn’t switch them by accident? This might account for the rub on the braking surface though not the hub itself.
Last edited by CA-Legal-Vette; Jun 18, 2021 at 09:42 AM.
Left or right caliper does make a difference as does front & rear.
I was trying to see a bleeder screw in the photo. It should face forward if correct caliper.
Last edited by HeadsU.P.; Jun 18, 2021 at 09:44 AM.
Front and rear rotors have a slightly different offset (0.1 inch). Are you sure that you didn’t switch them by accident? This might account for the rub on the braking surface though not the hub itself.
Left or right caliper does make a difference as does front & rear.
I was trying to see a bleeder screw in the photo. It should face forward if correct caliper.
Front and rear rotors have a slightly different offset (0.1 inch). Are you sure that you didn’t switch them by accident? This might account for the rub on the braking surface though not the hub itself.
(Other than DarrenX33 posting later that he only disassembled the front...) The rear rotors have the parking brake adjusting holes in them; this rotor in the pics does not.
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Originally Posted by DarrenX33
Before I tear into this. What’s the cause of one side being too close to the hub of the rotor to the point where it rubs? You can see the wear (line). It’s just the right side of the caliper which seems too close.
Is this a replacement caliper? The top of the halves are not flush.
5452273 is the correct caliper number but it looks like the bolt holes were machined wrong, You might want to get another replacement caliper.
Is this a replacement caliper? The top of the halves are not flush.
5452273 is the correct caliper number but it looks like the bolt holes were machined wrong, You might want to get another replacement caliper.
these are the calipers that were on the car when I bought it. All I changed in there were the pads and the rotors are new. Other side (passenger) is fine.
I'd crack the mounting bolts loose and see how much up/down play there is in the caliper mounting holes.
I did this. I was able to pry a bit with a bar in between the caliper and hub and it moved. While I held it I retightened. Now there is more space. Not a ton, but more. I will try it like this and see if I get and more rubbing or noise. Thanks all for the input and suggestions.
It's likely slight tolerance issues here. It doesn't look like the caliper is touching the rotor very hard, so I'd figure out where the contact point is and grind a smidge off the caliper there....won't take much to clearance it.
Just to make a note on this. I went with EBC rotors which are made in the US/UK. Not China.
i would still measure..
good to know that's where i will buy from if i need to..
what does it say on the box? i see a lot of wiggle room
made by our outside partners...... and MOSTLY made Outside these sources where castings or finished rotors have to be bought in to complement the range, the strictest quality controls are applied to ensure the safety and quality of the parts we sell. We source only highest quality parts from well known and proven OEM manufacturer vendors and we are responsible for and guarantee those parts to fit and perform as expected. All suppliers of castings for the EBC group are ISO approved to the highest specification and have been visited and approved by the German TUV authorities.
Front caliper rubbing rotor hub.
