Sticky Brake Caliper?

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Warrior
Joined: Tue 11 May, 2010 10:02
Posts: 443

  Z3 roadster 3.0i

Sticky Brake Caliper?

Post by Warrior »

I had an advisory on last years MOT that the drivers side brake caliper was sticking. I'd had a couple of minor juddery moments that I put down to the road surface at the time, but had the caliper looked at and it's been fine up til now. Zeddie has done very few miles of late and the caliper is sticking again so going to bite the bullet and replace.

Couple of questions. Any benefit in having both fronts done at the same time? Genuine BMW or aftermarket?

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BladeRunner919
Joined: Fri 17 Feb, 2012 20:18
Posts: 2225

  Z3 roadster 1.9

Re: Sticky Brake Caliper?

Post by BladeRunner919 »

I can't see any reason to do both if only one is a problem. Why not just send yours to be refurbished by these guys: http://www.biggred.co.uk (assuming this isn't your daily-driver, of course).

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pingu
Joined: Fri 30 Apr, 2004 16:01
Posts: 3406

  M roadster S50

Re: Sticky Brake Caliper?

Post by pingu »

Very cheap to overhaul yourself, but can be very fiddly and potentially quite dangerous :shock: .
Pingu

Warrior
Joined: Tue 11 May, 2010 10:02
Posts: 443

  Z3 roadster 3.0i

Re: Sticky Brake Caliper?

Post by Warrior »

BladeRunner919 wrote:I can't see any reason to do both if only one is a problem. Why not just send yours to be refurbished by these guys: http://www.biggred.co.uk (assuming this isn't your daily-driver, of course).
Liking the red one's..... Do you know if they actually refurbish the one's you send or like for like?

Also I have no idea what new OEM calipers cost so can't tell if prices are good? :rtm:

Rafolian
Joined: Wed 27 Feb, 2013 08:41
Posts: 547

  Z3 roadster 2.8

Re: Sticky Brake Caliper?

Post by Rafolian »

Pair of brand new front calipers with 12 month warranty on fleabay, 76 quid!!!!

peter2b
Joined: Sat 01 Nov, 2014 18:47
Posts: 963

  Z3 roadster 2.2i
Location: cheshire

Re: Sticky Brake Caliper?

Post by peter2b »

my zed was getting hot on the front ns wheel , even though the caliper looked ok and free movement I changed it sorted only took 30 mins to change it, had a level 11 service the next week end so they replaced the fluid for me
peterz3

Del
Joined: Sat 19 Nov, 2011 18:35
Posts: 2136

  Z3 roadster 1.9

Re: Sticky Brake Caliper?

Post by Del »

In most cases you only need to replace the rubber piston seal and dust cap. A good idea to replace an aged brake hose at the same time as they can break-down inside and cause similar symptoms to a sticky caliper. Plenty of "how to" videos on youtube
https://brakeparts.co.uk/#!/

corky
Joined: Fri 27 Nov, 2009 18:09
Posts: 265

  M roadster S50
Location: Wakefield

Re: Sticky Brake Caliper?

Post by corky »

When you change the pads and force the piston back to quick it can drag air into the system.
So when you are driving the air warms up and expands to put pressure on the pads making them hot .
solution.
Bleed the caliper to take the air out and you should be fine

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leahandsteve
Joined: Sat 29 Sep, 2007 20:02
Posts: 122

  Z3 roadster 1.9
Location: Stokenchurch (J5 M40)

Re: Sticky Brake Caliper?

Post by leahandsteve »

Just done this last week, very easy to do.

A kit to do both rears from Big Red £43 delivered, comes with pistons, all seals, grease.

The other essential piece of kit is a Sealy VS820 pressure bleeder, makes bleeding a doddle.

4wheels
Joined: Sat 24 Sep, 2016 19:42
Posts: 80

  Z3 roadster 3.0i

Re: Sticky Brake Caliper?

Post by 4wheels »

Mine just had sticky pads in the caliper due to rust. Needed new pads and discs and a good file.. All ok now.

bertiejaffa
Joined: Fri 26 Jul, 2013 09:28
Posts: 1728

  M roadster S50
Location: Manchester

Re: Sticky Brake Caliper?

Post by bertiejaffa »

Warrior wrote:
BladeRunner919 wrote:I can't see any reason to do both if only one is a problem. Why not just send yours to be refurbished by these guys: http://www.biggred.co.uk (assuming this isn't your daily-driver, of course).
Liking the red one's..... Do you know if they actually refurbish the one's you send or like for like?

Also I have no idea what new OEM calipers cost so can't tell if prices are good? :rtm:

If you send them away they refurbish yours and send them back. The kits they supply are great and the prices have been mentioned already - not difficult to do as long as you are competent at bleeding your brakes, the hardest thing could be getting the sticking piston out of the caliper itself. BIGGRED website have plenty of video links how to do it all as well.
Here come the girls.....
Image
My //M Refurb
My First Zed Journal

MarkAP68
Joined: Sat 03 May, 2014 21:32
Posts: 42

  Z3 roadster 1.9
Location: Swadlincote

Re: Sticky Brake Caliper?

Post by MarkAP68 »

I replaced the seals and pistons on all 4 of my calipers, as mentioned before it can be a bugger to get the piston out but I used compressed air and it came out easily. I got all the parts off ebay, cost me around £8 for each caliper.

I also got them shot blasted whilst they were stripped down and powder coated for about £10 each.

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c_w
Joined: Thu 19 Aug, 2004 16:50
Posts: 4032

  M roadster S50

Re: Sticky Brake Caliper?

Post by c_w »

You can usually get them out with a footpump quite easily using a piece of pipe like a vac hose (or whatever fits tightly in the footpump and slots into the caliper connection. Doesn't need to be airtight, just pressed on whilst you work the pump.

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leahandsteve
Joined: Sat 29 Sep, 2007 20:02
Posts: 122

  Z3 roadster 1.9
Location: Stokenchurch (J5 M40)

Re: Sticky Brake Caliper?

Post by leahandsteve »

You can usually pump the piston out once the pads are removed, just using the break pedal.

A bit messy once the piston pops out, just have a bowl underneath.

Thats how i did mine.

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