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Discussion Starter #1
Hi my first post here and hope I can get your opinions on what I am currently dealing with.

I have found a 2016 plate CLA45 with 25k miles in the colour and spec I want from a main dealer so I get the 2 year AMG warranty (i'm in the UK)

One of my first questions to the dealer as they are 180 miles away was about checking the brakes for me and I wanted to know the disc wear. The measurements came back that the discs front and rear are 1mm below the minimum wear! The dealer is also putting a fresh 12 month MOT on the car.

Now am I wrong in telling them the car should have new discs and pads put on it as they have measured them and now know the discs are 1mm below the minimum especially as they are also giving it a new MOT? They have told me they deem the discs to still be fine and the pads are only 50% worn. I have had quite an argument over this.

It has ended up being in a situation of agreeing a cash price for the car as it is and then paying extra to have the discs and pads replaced as a slight discount to retail of about £300 off the discs and pads. I am also waiting for an exact price to do the work from my local independent specialist.

So would you think these discs being 1mm below minimum are road worthy and perfectly fine for an MOT pass especially from a MB main dealer? Should the dealer be replacing them on the car before selling it?

Also should I be worried the life the car has had if its eaten its discs in 25k miles? It's got full MB service history with all servicing done as per the schedule.
 

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they must put new rotors since they 1mm under required thickness, end of story.
the previous owener drove it hard may be, there for rotor needs to be replaced at 25k,the pads probably was replace one before and its the 2nd or 3rd set with 50% ware.
i would test drive really good over bumps (radio off ) to here all the loose parts rattles. The car rattles after driven for 30k especially on rough surfaces. if its nice and quite then its good. take photos under the hood ( remove that black fake looking carbon fiber cover) you want photos under that cover, its just pups off when you pull on it. you can post photos here and we can tell if any mods were done.
C
 
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Discussion Starter #3
they must put new rotors since they 1mm under required thickness, end of story.
the previous owener drove it hard may be, there for rotor needs to be replaced at 25k,the pads probably was replace one before and its the 2nd or 3rd set with 50% ware.
i would test drive really good over bumps (radio off ) to here all the loose parts rattles. The car rattles after driven for 30k especially on rough surfaces. if its nice and quite then its good. take photos under the hood ( remove that black fake looking carbon fiber cover) you want photos under that cover, its just pups off when you pull on it. you can post photos here and we can tell if any mods were done.
C
Thanks my post took a while to get authorised to post here for some reason and I have since bought the car. The dealer refused to do the brakes but also put a 12 month MOT on the car saying they believe the brakes are perfectly fine. I have new discs and pads lined up at my local independent for £1k and added to the price of the car it still came in under budget and below any equivalent cla45 available at the time. It is booked in at the local independent for a free heath check in a couple of weeks and I do low mileage so it won't have done much by the time it gets checked.

A photo on the way home at my mates house

66308
 

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brakes should fail mot if they are under legal limit, if not tell them you will report their mot tester to trading standards for not doing there job right, if they know the disks need changing stand your ground and tell them you will report them then go elsewhere, sounds very low level of customer service and satisfaction, just because they think they have you with the proverbial hook in your mouth (they have the car you desperately want) , all the alarms should be going off if they are not willing to correct it before they sell it , what else is wrong that they could be hiding ,just my 2cents the choice is yours but i know what i would be thinking. where are you in the UK Sp0oner ?
 

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Walk away from this car & dealer.
 

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32mm initial ... 29mm current (-1 from min of 30) ... iirc
Considering the internal vent voids vs friction disc volume thats approx 10~11% less swept disc annulus volume
Or considering the swept surface area and the 1.5mm scrub thats about 123000 cubic mm or 123cc of iron gone - on each of the 2 surfaces
Thats a lot less heat capacity leading to all sorts of mechanical integrity and hence safety issues
If that gets past your mot then that system needs a kick in the ass
No brainer ... change the rotors and pads
 

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Discussion Starter #7
It's taking my replies ages to get posted! See above which will have been missed by everyone! As another update I took it to my local independent who do a free health check on the car and after checking it all over they said it was all good including the brakes and had decided to measure them out of curiosity after what I had told them and found them not below the minimum thickness at all, the rears had 1mm left and the fronts .7mm left on them.

So i'm glad I got the car now and relieved I don't need to do the brakes for a while yet.
 
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