Car vibrates like mad when braking - rear right hand corner - need help asap

[Wazzzer]

they should be tightened to 65mn too

[MoMartin]

I've finally got myself home, after a long drive back. The guy had some spare bolts in his van that half fitted, so he put them through, then put a nut on the end of it as extra safety. Not ideal I know, but it's got me home, and I'm now in the process of ordering the new bolts and LOCTITE.

Also, according to the rac guy, towing back was out of question as it was too far. And i didn't want to pay to stay in a hotel over night.

Cheers for all the help and suggestions. I'll be sure to pack the bolts with loctite when I refit the new bolts

[MoMartin]

M10 bolt, 1.25 pitch, 30mm thread length

I've just given a bolt place a call, and they are after the complete length of the bolt - including the unthreaded area of the bolt.

So would is it 30mm total length still or is it something like 10 mm unthreaded, 20mm threaded?

Cheers, Mo

[Bellend]

The trouble with bodging brakes is they may well be fine under light braking but things give when under pressure i.e hard braking.

Normally that is when you need the brakes the most!

Just go VW or TPS they are a matter of a couple quid tops.

[MoMartin]

I asked VW and they said that they don't sell them individually, they only sell it with the carrier itself, and that costs loads to buy.

And yeah i know, the temp fix has got me home, but i'm not intending on driving my car anywhere whilst it has only got this temp fix. Luckily there was little to no traffic on the way back home last night, so i ended up having an almost straight run (200+ miles) without having to use my brakes anyway.

[Simeon]

Vagcat suggests the following. Give a dealer the part no and surely they'll get them for you - I bought new front ones late last year. Vw / Seat / Skoda / Audi will all be able to supply them.

N 90729401
allen key head bolt
M10X1,25X21 / 

Edit; They are fully threaded bolts iirc and if you buy them from a bolt place make sure they are the correct tensile strength..

[MoMartin]

They are fully threaded? When I had them off a month or so back, in sure they were half unthreaded? Or doesn't it matter?

[Bandit127]

Whip one off the other side and measure from the end to the sealing face of the head...

Make sure the bolt place gives you at 10.8 spec. (This specifies high tensile bolts).

You would be better off getting them from VW if you can though. A lot of the critical bolts on my Mk3 and Mk4 have some sort of green coating. I assume this is anti-rust but it doesn't look at all like zinc to me.

[MoMartin]

I might give it a go a bit later as I'm going to loctite the s*hit out of the other side now , and vw don't sell them Individually, so I'm going to have to coat it with an anti rust agent too probably, unless they come like that normally

[Bandit127]

I have never seen "proper" caliper bolts go rusty. I would only be worried with the ones you would get from the bolts place as they will be general purpose and not specifically designed to live outdoors.

Have you got a scrappy near you? That is another option.

If you are stuck with general bolts, get 10.8 ones and give the heads a light coat of grease. They should be fine.

Also, make sure you get Loctite thread lock and not retainer. Thread lock (usually blue) is made for disassembly. Retainer (clear green and it stinks) is basically strong glue.