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Topic # 136423 26-Nov-2013 20:19
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I went for my warrant yesterday.  As usual before I go, I check the obvious things like tyre tread, lights, horn, wipers and brake pads.

I didn't watch while the inspection was being done and when the inspection was completed the inspector made a comment about the brake pads getting down a bit. Yes, I knew that, I had looked at them myself prior to the inspection, but there still looked to be at least an 1/8" between the disk and the backing plate.  He didn't say it had failed and I presumed it had passed.

When I arrived home I noticed the old sticker was still on the window, I took a closer look at the report and sure enough he had failed it, stating the front pads needed replacement.  I didn't have time to go back and discuss it there and then.  Today I decided to take a closer look at the old pads. They had at least 3.5 mm of meat left on them, measured with a caliper.  I debated whether or not to put them back on, but as I had new set on the shelf I fitted the new ones.

My question, if anyone can help, is: What are the legal requirements for brake pads?  I've certainly worn them down much more than this in the past and replaced them when the wear indicator starts to make a noise.

I can't help feeling I have been the victim of a zealous inspector.  Judging by the amount wear on the pads and previous experience I would have expected another 12 months or so of use before they needed replacement.




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  Reply # 941253 26-Nov-2013 20:23
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No they can't fail it cause brake pads ' look ' worn, They could if brake pads were down to steel

They should only be doing a brake test on the rollers

John

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  Reply # 941254 26-Nov-2013 20:23
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Here's the thing. If those pads fail before the next warrant and cause an accident, he is potentially personally liable.




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  Reply # 941256 26-Nov-2013 20:27
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My understanding is the pads need to have sufficient available to be viable to see through to the next inspection and to brake to bring the vehicle to a halt in a prescribed distance.




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  Reply # 941257 26-Nov-2013 20:28
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andrewNZ: Here's the thing. If those pads fail before the next warrant and cause an accident, he is potentially personally liable.


Not really as the WOF inspection is how the car is on the day it's inspected, After that it's up to the owner to keep it up to WOF standard

Tail light could blow before the next WOF is due and cause an accident, Are they going to fail it on that?

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  Reply # 941258 26-Nov-2013 20:29
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There is a stopping requirement, though, and regardless of how thick the pads are, if it fails to meet the braking requirements, it's a fail.

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  Reply # 941259 26-Nov-2013 20:29
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KiwiNZ: My understanding is the pads need to have sufficient available to be viable to see through to the next inspection and to brake to bring the vehicle to a halt in a prescribed distance.


The car might only do 200km before the next WOF can the inspector see into the future?

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  Reply # 941262 26-Nov-2013 20:32
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Brakes are something not to take risks with.




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  Reply # 941263 26-Nov-2013 20:32
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Inphinity: There is a stopping requirement, though, and regardless of how thick the pads are, if it fails to meet the braking requirements, it's a fail.


If it meets the stopping requirements on the day of the WOF test then it should pass

It should fail if the brakes are not safe IE brake pads are worn out and they are down to steel or they have a balance problem when braking IE too much pull to one side

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  Reply # 941264 26-Nov-2013 20:33
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KiwiNZ: Brakes are something not to take risks with.


Disc brakes give plenty of warning before they get down to steel,

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  Reply # 941280 26-Nov-2013 20:39
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johnr:
It should fail if the brakes are not safe IE brake pads are worn out and they are down to steel or they have a balance problem when braking IE too much pull to one side


Pads don't have to be worn to the steel to fail. If the brake force applied does not meet requirements (able to stop in <7m from 30km/h, iirc), it's a fail.

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  Reply # 941283 26-Nov-2013 20:40
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I am no expert on the WOF system but I have done a lot of work on car brakes over the years, I also worked for a place in Takapuna (Takapuna car parts) many many years ago working on cars including car brakes

Technofreak Take the car to a brake expert and get a second opinion

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  Reply # 941284 26-Nov-2013 20:43
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Inphinity:
johnr:
It should fail if the brakes are not safe IE brake pads are worn out and they are down to steel or they have a balance problem when braking IE too much pull to one side


Pads don't have to be worn to the steel to fail. If the brake force applied does not meet requirements (able to stop in <7m from 30km/h, iirc), it's a fail.

Poor braking could be caused for other reasons, Brake balancer , Brake booster , Water in the brake fluid , Air in the brake lines , Best Technofreak measures the brake pad thickness what it is now and compares it to a new set of brake pads or checks what the manufacturer recommends


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  Reply # 941285 26-Nov-2013 20:44
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I think the responsible action is to replace the pads for the drivers safety and that of other road users.




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Using empathy takes no energy and can gain so much. Try it.

 

 


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  Reply # 941286 26-Nov-2013 20:47
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KiwiNZ: I think the responsible action is to replace the pads for the drivers safety and that of other road users.


This is the best idea it's not like they are expensive these days (depending on type of car)

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  Reply # 941287 26-Nov-2013 20:47
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seems to be a couple of measurements,, one being the manufacturers minimum specification and 3.5mm oon NZTA







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