Why are my Kopis binding on the brake pads?

[Jordan]

No.. the caliper is 2 parts. The slide on rails within each other, thus expanding and contracting with pad thickness.

[Bavarian3]

Do you mean the piston inside the caliper?

[MrK]

Calipers do expand. Think of them as 'claws' that hold the brake pads onto the discs. thicker pads will make the calipers wider (front to back, that is)

[Bavarian3]

The Kopis do not have a tight fitment around the calipers.... there is plenty of room in there...

The caliper doesn't expand (it doesn't get any bigger)... I don't know what you mean Jordan...

Are all the bolts on there tight and straight? Did you install them or did a shop do the work? Can you take a photo of it?

I just installed new fresh HPS and Balo rotors on my 86 ETA, there is no rubbing issues at all nor should there be.

[Jordan]

I've heard of this problem before, typically only on wheels with very tight caliper clearance.

I think you have realized by now the caliper expands to fit the pad in, and it will get smaller as the pads do.

You have 3 options.

A thin custom spacer.
Remove the brake pads, and have a machine shop take a couple mm off of them.
Grind on the caliper until clearance is made


Swapping calipers might also work.

Do you have ATE or Girling calipers? The girling front calipers are superior in design to the ATE.

[MR 325]

Spoilerless 318iS, you shall be the first to do it my man

Those wheels used to belong to fuzz, hehe. The wheels on his car now used to be on your car!

Love the car btw.

[m20e34]

I found the car on e30tech, but I would imagine the previous owner was on r3v too. Condition-wise, the car has come a long way since I bought it. Here is a picture I saved from the e30tech ad:



I changed up the front up a bit you can see. The interior was trashed when I bought it, now it's almost mint. The exterior will be a 9/10 once I get the new rear bumper trim and euro bumper trim parts installed. Also have a spoilerless trunklid to go on that needs painted. The lid on it has a huge ass dent in the back.

[DrMcDave]

i remember it being for sale

[MR 325]

You bought that car from another forum member didn't you?!

[m20e34]

It is pretty hot, isn't it?




look ma! no sunroof!


Too bad my camera isn't so hot.

[m20e34]

Yeah, yeah, the car is always a work in progess.

I dremelled a sliver off of the pad backing plate, and a little bit all the way around the inside of the wheel.

Problem solved. I just can't believe this isn't a common problem. Perhaps the Hawk backing plates are thicker than OEM?

[asubimmer]

smoked ellips would be HAWT!!11!

[Mystikal]

Your car is extremely hot.

I bring nothing else to the table.

[asubimmer]

he isnt lying either... he always trys it

hopefully someday it will work :D

take as a complement ;)

[NC325iC]

haha I always give it a shot...

he isnt lying either... he always trys it