Stripped both bolts on the rear caliber of E53

[andrewwynn]

Also the guide pins are just like 25-30 N·m that's easy to over torque but I actually think it's easier to strip the fastener end than the thread end. (which if you did strip the fastener end you still want to replace them).

I thought you were talking about the main caliper bolt.

[Maruzo]

Originally Posted by andrewwynn

Also the guide pins are just like 25-30 N·m that's easy to over torque but I actually think it's easier to strip the fastener end than the thread end. (which if you did strip the fastener end you still want to replace them).

I thought you were talking about the main caliper bolt.

No, not the main caliper bolt, I didn't touch them.

I think I was over torquing them the wrong direction, thinking I was loosening the bolt when I was actually tightening them over and over.

When I realized my mistake and start to loosen them (clockwise?), I found there's thin metal circling a few of the threads on the top bolt.

I used a pick to take out the thin round metal. The thread on the bolt actually looks good.

So, I'm thinking maybe I removed the thread inside the caliper guide.

Anyway, I'm going to take off the caliper again and tighten the guide bolt to the bracket directly and see what happens.

[nick325xit 5spd]

I'm just going to point out that an entire rebuilt rear caliper and bracket assembly for the vented rear rotor is $60 plus core.

So there's a limit to how much effort and time you should be putting into the existing one if you have doubts about its integrity.

[Maruzo]

Originally Posted by nick325xit 5spd

I'm just going to point out that an entire rebuilt rear caliper and bracket assembly for the vented rear rotor is $60 plus core.

So there's a limit to how much effort and time you should be putting into the existing one if you have doubts about its integrity.

That sounds like a pretty good deal. I found a rebuilt one selling for 90 plus on ebay.

Do you have a link to the $60 deal?

[nick325xit 5spd]

Originally Posted by Maruzo

That sounds like a pretty good deal. I found a rebuilt one selling for 90 plus on ebay.

Do you have a link to the $60 deal?

Rockauto.

eBay and Amazon sales generally don't have a mechanism for the core refund, so you end paying for both the rebuild caliper and the core charge.

[bcredliner]

Originally Posted by cn90

Brake is safety issue, I would not play with it.
Park the car until you get replacement parts.

- If the bolt threads are stripped, then the solution is easy: new bolts from dealer (use realoem.com to find PN):

- The the caliper threads are stripped, then get a new bracket at local junk yard or ebay.

https://www.realoem.com/bmw/enUS/sho...diagId=34_1051

[Fifty150hs]

Originally Posted by nick325xit 5spd

I'm just going to point out that an entire rebuilt rear caliper and bracket assembly for the vented rear rotor is $60 plus core.

So there's a limit to how much effort and time you should be putting into the existing one if you have doubts about its integrity.

You can rebuild them yourself for less than that.

[nick325xit 5spd]

Originally Posted by Fifty150hs

You can rebuild them yourself for less than that.

Eh. OP has apparently stripped the thread out of the bracket.

Yeah, you can swap the piston seals for less, but rebuilding the calipers adds a whole set of other variables. (Piston rust, damaging the seals on install, etc.) Swapping a rebuilt in is easy and quick and will get the car back on the road faster with the least risk.

The downside, of course, is that the rebuilt calipers usually have the coating stripped off so they rust.

[Fifty150hs]

Originally Posted by nick325xit 5spd

Eh. OP has apparently stripped the thread out of the bracket.

Yeah, you can swap the piston seals for less, but rebuilding the calipers adds a whole set of other variables. (Piston rust, damaging the seals on install, etc.) Swapping a rebuilt in is easy and quick and will get the car back on the road faster with the least risk.

The downside, of course, is that the rebuilt calipers usually have the coating stripped off so they rust.

I'm suspicious he actually stripped the bracket. That's really hard to do. I'm thinking, like Andrew, that he used a 6mm in a 7mm hole and stripped the inside, not the threads. That's much easier to do. You're right about it taking longer to rebuild your own.

[Maruzo]

I took off the caliper and verified the bracket thread was stripped. The thread on the guiding bolt looks pretty good still.

Waiting on an used bracket to arrive by next week to put back the whole thing. Hopefully the threads are in good shape.

Right now the entire rear of truck is jacked up at the subframe mid point. I also placed a jack stand under the Jack point on rear driver side. Do you guys think it’s ok to leave the X5 like this for over 5-6 days?